A Defense of Grace Against Pelagian Rationalism
Book One: The Opening Gambit — Augustine States His Case
We are at the very beginning of the work, where Augustine establishes the terms of the debate and lays out his fundamental charge against Julian of Eclanum: that Julian’s teaching is not merely mistaken but identical to the condemned heresy of Pelagius.
Augustine opens by addressing Julian directly, framing the entire work as a response to Julian’s earlier attack on Augustine’s position. He recounts that Julian had dedicated his own book to a certain Tribunus and that Julian had boasted of refuting Augustine’s *De Nuptiis et Concupiscentia* (“On Marriage and Concupiscence”). Augustine does not respond out of personal grievance, he insists, but because the truth of the Catholic faith is at stake. The central issue, as Augustine identifies it, is whether original sin is a reality transmitted to every human being from Adam, or whether it is a fiction invented by the Church to condemn God’s creation. Julian has charged Augustine with Manichaeism — the ancient heresy that matter and the body are evil — and Augustine is determined to show that it is Julian, not himself, who departs from the apostolic tradition.
“You say that we are Manichaeans; we say that you are Pelagians. But let us put aside the names of the parties, and let us discuss the matters themselves.”
Augustine then proceeds to summarize Julian’s position as he understands it. Julian argues that concupiscence — the disordered sexual desire that accompanies procreation — is not a flaw or a wound in human nature but a natural good, given by God, and that it cannot be the vehicle for transmitting any sin. For Julian, every infant is born in the same state as Adam before the Fall: innocent, free of any inherited guilt, and fully capable of choosing good or evil through their own free will. Baptism, in Julian’s view, is therefore a rite of cleansing from sins *already committed* by the individual, not a remission of an inherited condition. Augustine counters that this position destroys the entire logic of infant baptism, which the Church has always practiced: if infants have no sin to be forgiven, why does the Church baptize them at all? The universal custom of the Church, Augustine argues, is the voice of tradition and the witness of Scripture, and it testifies that infants are born under the condemnation of Adam’s transgression.
This opening book matters because it immediately clarifies the stakes. Augustine is not debating a minor point of theology; he is defending the very structure of Christian salvation. If Julian is right, then Christ died only to teach by example, not to heal a disease. If Augustine is right, then every human being enters the world in need of a Savior, and grace is not a reward for merit but an unearned gift. The reader is positioned to see that the entire work will hinge on the interpretation of a few key biblical passages and the meaning of a single human experience: the disordered desire that Augustine calls concupiscence.
Book Two: The Nature of Concupiscence — Good, Evil, or Wounded?
Here Augustine moves deeper into the philosophical and theological anatomy of the human will. Julian has argued that concupiscence, particularly sexual desire, is a natural good implanted by God and therefore cannot be a source of sin. Augustine must show that while concupiscence as a power of the soul is created by God and thus good in its substance, its *disorder* — its rebellion against the rational will — is a consequence of sin and a penal condition.
Augustine draws a sharp distinction between the substance of a thing and its quality or condition. The eye is good as a created organ, but blindness is an evil condition of the eye. So too, the sexual appetite is a natural faculty, but its current insubordinate state — its tendency to flare up without the consent of the will, its connection to shame — is a wound. He points to the universal human experience of shame regarding sexual organs and acts. Why, Augustine asks, do human beings cover their genitals, even in lawful marital intercourse? Why do they seek privacy for the act of procreation, while no one feels ashamed of eating or walking? The answer, he argues, is that concupiscence carries with it a sense of shame that testifies to a primordial disorder. This shame, Augustine insists, is not arbitrary; it is the remnant of the original sin by which Adam’s disobedience introduced a rebellion within his own body.
“The shame which accompanies concupiscence does not arise from the nature of the body, which God made good, but from the disobedience of the flesh, which is the penalty of sin.”
Julian, however, rejects this entire framework. He insists that sexual desire is simply a natural power, like hunger or thirst, and that calling it “evil” or “disordered” is to blaspheme the Creator. Augustine responds by pointing to the distinction between use and enjoyment. The Stoics and the Platonists, he notes, also recognized that the passions (the *pathe*) are not themselves evil, but become disordered when they revolt against reason. What Julian refuses to see, Augustine argues, is that the Christian tradition has added a historical dimension: the Fall. The disorder is not original to nature; it is an *addition* to nature, a wound inflicted by sin. This is why Paul in Romans 7 speaks of a “law in my members warring against the law of my mind” — a struggle that would not exist if the will were perfectly whole.
The clarification here is crucial: Augustine is not condemning the body or sexuality as evil. He is describing the human condition as one of *illness*, not of innate depravity in the Manichaean sense. The reader must understand that for Augustine, grace is medicine, not mere instruction. If concupiscence were simply a natural good, there would be nothing to heal. But because it is a wound, Christ the physician is necessary.
Book Three: The Witness of Scripture and the Fathers
Augustine now shifts from philosophical argument to the authority of tradition. He knows that Julian claims to be defending the Catholic faith; Augustine intends to show that the entire Church, East and West, has always believed what he now teaches. He marshals an array of witnesses: the Apostle Paul, the Old Testament prophets, and most importantly, the Fathers of the Church.
Augustine begins with Paul’s argument in Romans 5:12, “Through one man sin entered the world, and through sin death, and thus death passed upon all men, in whom all have sinned.” He focuses on the phrase “in whom all have sinned,” arguing that this cannot mean merely that all imitate Adam’s sin by their own choices (as Julian claims), but that all were somehow present in Adam and sinned *in him*. This is the foundation of the doctrine of original sin: a real, inherited guilt, not merely a bad example. Augustine quotes Cyprian of Carthage, who wrote in the third century that even infants, “born not from their own sin but from the contagion of the first death,” need to be baptized. He invokes Ambrose of Milan, who taught that “no one is free from sin, even if he has lived only one day.” He cites John Chrysostom, Basil of Caesarea, Gregory of Nazianzus — a chorus of voices from both the Latin and Greek traditions.
“If the Fathers of the Church, whom I have cited, are to be rejected, then let us reject the Church itself, which has always held and handed down this faith.”
Julian, Augustine notes, has tried to dismiss these authorities by claiming that they were only speaking of the *imitation* of Adam, not of inherited guilt. But Augustine presses the text: if Paul meant only imitation, why would he say that death reigned “even over those who did not sin after the likeness of Adam’s transgression” (Romans 5:14)? Infants, who have not imitated anyone, still die. This universal experience of death, Augustine argues, is the visible sign of an invisible debt. The Church’s practice of baptizing infants for the remission of sins is the *visible* proof that the Church believes infants are born with a sin that must be remitted.
What matters in this book is the weight of cumulative testimony. Augustine is not constructing a new doctrine; he is insisting that the Church has always believed what he now defends. The reader sees that the debate is not merely between two individuals but between two interpretations of the entire Christian tradition. Julian, by contrast, is presented as a rationalist who trusts his own logic over the consensus of the Fathers.
Book Four: The Pelagian Reading of Scripture Refuted
Augustine now takes up Julian’s specific scriptural arguments. Julian had claimed that the law of Moses and the Gospel of Christ both presuppose that human beings have the natural capacity to obey God’s commands without the need for a special, interior grace. If God commands, Julian argued, He must also give the power to perform — but that power is *nature itself*, not a supernatural gift. Augustine will dismantle this position passage by passage.
Julian’s key text was Deuteronomy 30:11-14, where Moses says the commandment is not too hard or too far away, but “in your mouth and in your heart, so that you can do it.” Julian took this to mean that the natural human will is sufficient. Augustine responds by reading the same text through the lens of the New Testament: Paul quotes this very passage in Romans 10:6-8, but he applies it to the *faith* that comes from the Word of Christ, not to unaided nature. Augustine argues that the commandment is “near” only because grace brings it near. Without grace, the commandment remains external, a burden; with grace, it becomes internal, a delight. He then turns to Ezekiel 36:26-27, where God says, “I will give you a new heart, and a new spirit I will put within you.” If nature were sufficient, Augustine asks, why would God promise a *new* heart? What is wrong with the old one?
“If the will is sufficient to fulfill the law, why does God promise a new heart and a new spirit? Let Julian tell us why God does not simply say, ‘You already have a good heart; use it.'”
Augustine also confronts Julian’s favorite argument from the justice of God. Julian had argued that it would be unjust for God to command what a human being cannot do, and therefore every human being *must* be able to obey perfectly. Augustine counters with Paul’s language in Romans 7: “I do not do the good I want, but the evil I do not want is what I do.” This, Augustine insists, is not a description of Paul’s pre-conversion state, but of the ongoing struggle of the justified believer. The law was given, Augustine explains, to make us conscious of our weakness, so that we would cry out for grace. It was not given to be fulfilled by our own power, but to drive us to the Physician.
The crux of this book is Augustine’s refusal to separate God’s commands from God’s gift. For Julian, grace is simply the law, the teaching, the example of Christ — external aids that the will can use or reject. For Augustine, grace is an interior transformation: the Holy Spirit pouring love into the heart (Romans 5:5) so that the will actually *wills* what God commands. Without that interior gift, the command only produces frustration and hypocrisy.
Book Five: The Origin of the Soul — Traducianism, Creationism, and the Transmission of Sin
We are now in the fifth book of *Against Julian*, where Augustine confronts Julian’s most sustained attack on the doctrine of original sin — the argument that if sin is inherited through physical generation, then the soul itself must be tainted by its origin, which would either make God the author of evil (if He creates each soul directly) or reduce the soul to a material and mortal thing (if it is passed down from parents).
Julian presses the dilemma with relentless logic. He argues that the Catholic position on original sin is philosophically incoherent. If each human soul is directly created by God (the creationist view), then God would be creating a sinful soul — which is impossible, since God is good and cannot be the author of evil. If instead the soul is transmitted from the parents through the act of generation (the traducianist view), then the soul must be material, corporeal, and therefore mortal — which contradicts the soul’s spiritual nature. Julian’s conclusion: either way, the Catholic doctrine of inherited sin collapses. He offers his own alternative: each soul is created directly by God and is innocent at its origin; sin enters only through the individual will’s free choice, not through birth.
Augustine does not claim to have a definitive answer to the origin of the soul. He admits openly that this is one of the most difficult questions in Christian theology, and he has not yet settled it with certainty. But he insists that the difficulty of explaining *how* sin is transmitted does not disprove the fact *that* it is transmitted. The Church’s universal practice of baptizing infants for the remission of sins would be meaningless if infants had no sin to be remitted. “The Church holds them and brings them to receive the remission of sins, not because they have sinned by their own will, but because they have contracted sin from the flesh of the one who sinned.”
Augustine then offers a detailed examination of the traducianist position, which he leans toward but does not dogmatically assert. He argues that the soul, like the body, is propagated through generation — not by a process that makes the soul material, but by a mysterious mode of transmission that we do not fully understand. He compares it to the way a flame lights another flame without losing its own substance: the soul comes from the parents’ souls, but remains spiritual and immortal. The key point is that the soul, by being united to a body conceived in sin (through concupiscence), becomes subject to the guilt and corruption that Adam’s sin introduced into human nature. The transmission of original sin is not primarily about the soul being “made” sinful by God, but about the human nature that is propagated from Adam being wounded, liable to death, and subject to the bondage of the will.
“I do not deny that the soul is propagated by generation; I only insist that it is not thereby made material or mortal. The difficulty of explaining how this happens does not justify denying the plain facts of Scripture and the practice of the Church.”
What Augustine is doing here is crucial for his overall argument. He is refusing to let an unresolved philosophical question derail the clear teaching of Scripture and the Church. Julian demands that Augustine provide a complete and internally consistent theory of how original sin is transmitted before he will accept that it exists. Augustine replies that the fact is established by divine revelation and ecclesiastical practice; the mode of transmission is a secondary mystery. This is a fundamentally different approach to theology. For Julian, the coherence of a philosophical system is the test of truth. For Augustine, the authority of Scripture and the Church is primary; philosophy serves to clarify, not to dictate, what can be believed.
Book Six: The Pelagian Interpretation of the Old Testament Saints
We move now to Book Six, where Augustine turns to a subject that Julian had made a centerpiece of his attack: the example of the Old Testament saints. Julian had argued that if original sin truly corrupted human nature, then no one before Christ could have lived righteously — yet Scripture presents figures like Abraham, Isaac, Jacob, Moses, David, and Job as righteous. How could they be righteous if they were born with a corrupted nature and had no access to the grace of Christ (who had not yet come)?
Julian’s logic is straightforward. If original sin is a real corruption of nature, then human beings are incapable of any good without grace. But the Old Testament saints *did* perform good works and were called righteous by God. Therefore, either original sin does not corrupt nature in the way Augustine claims, or the grace that saves is not uniquely Christian — it is the same natural law and free will that all human beings possess. Julian’s conclusion: the Old Testament saints prove that human nature is not radically corrupted, and that grace is simply the aid of God’s teaching and example, available to all people at all times.
Augustine’s response is one of the most careful and nuanced sections of the entire work. He does not deny that the Old Testament saints were righteous; he insists on it. But he argues that their righteousness was itself a gift of grace, given through faith in the future Redeemer. “They were saved in the same way as we are saved, by the faith of the same Mediator, who was to come in the flesh. They believed in the promise; we believe in the fulfillment.” The difference is not in the substance of grace, but in its temporal manifestation. The saints of the Old Testament looked forward to Christ; those of the New Testament look back to Him. But both are saved by the same faith, the same grace, the same Mediator.
Augustine then goes through the lives of specific Old Testament figures to show that they were not sinless. He points to David’s adultery and murder, to Moses’ failure of faith at Meribah, to Job’s impatience. Their righteousness was not a perfection of nature but a forgiveness of sins, granted by God’s mercy. They were righteous because they confessed their sins and trusted in God’s promise, not because they kept the law perfectly. The very Psalms that Julian cites as evidence of natural righteousness — “Blessed is the man who walks not in the counsel of the wicked” — Augustine reads as prayers for grace, not boasts of achievement.
“Let them show me a single just man, from the beginning of the human race to the end, who was without sin, and I will concede that human nature can be sinless in this life without the grace of Christ. But they cannot, because there is no such man.”
The significance of this argument is that it undercuts Julian’s entire appeal to history. Julian had presented the Old Testament saints as proof that human nature is basically intact. Augustine shows that they are proof of exactly the opposite: they needed grace, they fell into sin, and they were saved only by God’s mercy. The continuity between the Old and New Testaments is not that human nature is sufficient, but that grace has always been necessary. Julian’s appeal to history backfires: the very figures he cites as evidence of natural righteousness become, under Augustine’s reading, witnesses to the universal need for grace.
Book Seven: The Pelagian Definition of Sin and the Nature of Free Will
Book Seven shifts to a more philosophical register, as Augustine engages with Julian’s systematic definition of sin. Julian had argued, following the Pelagian tradition, that sin is strictly a matter of individual will and conscious choice. For Julian, sin can only be an act of the will that is freely chosen and consciously performed. Anything that is not chosen — anything that is inherited, involuntary, or unconscious — cannot be sin. This means that concupiscence, even if it is present in an infant, is not sin because the infant has not chosen it. Sin is always and only a personal act.
From this definition, Julian draws devastating conclusions against Augustine. If sin is only personal choice, then original sin is impossible. If concupiscence is not chosen, it is not sin. If death is not a punishment for inherited guilt but a natural condition, then infants do not need baptism for the remission of sins. Julian’s system is logically coherent: from his definition of sin, everything else follows. He accuses Augustine of destroying the very concept of sin by expanding it to include inherited conditions that no one has personally chosen.
Augustine responds by challenging Julian’s definition of sin. He argues that sin is not merely a personal act of the will; it is also a state or condition that human nature has fallen into. The sin of Adam was a personal act, but the consequence of that act is not merely punishment — it is a change in human nature itself. Human beings are now born in a state of sin, not because they have personally sinned, but because the nature they receive from Adam is a sinful nature. “We were all in that one man when he sinned, and from him we have derived the guilt of sin, not by imitation but by propagation.”
Augustine draws a crucial distinction between *actual sin* (sins committed by personal choice) and *original sin* (sin inherited from Adam). Both are truly sin, but in different senses. Original sin is not a personal act, but it is a real guilt that attaches to human nature because of its origin in Adam. The infant needs baptism not because it has committed sin, but because it is born in a state of separation from God — a state that is itself sinful, even though no personal choice is involved. Augustine compares this to the way a slave is born into slavery: the child did not choose to be a slave, but it is truly a slave because of its birth.
“The sin of the first man is so great that it changed human nature into a sinful nature, and this change is propagated to all his descendants. They are not guilty of his actual transgression, but they are born with a nature that is alienated from God, and this alienation is itself sin.”
What is at stake here is the very definition of sin. Julian operates with a moralistic definition: sin is a bad act freely chosen. Augustine operates with a relational and ontological definition: sin is a state of alienation from God, which can be inherited as well as chosen. This is not a minor difference. It determines whether baptism is a ceremony of forgiveness for personal misdeeds or a rebirth from a state of spiritual death. It determines whether grace is an external aid for the will or an internal transformation of nature. Augustine’s entire understanding of Christianity depends on his definition of sin being correct. If Julian is right, the Church’s practice of infant baptism is meaningless. If Augustine is right, it is the very foundation of salvation.
Book Eight: The Pelagian Christology — Was Christ Born Under the Same Conditions as Every Other Human?
We are now in the eighth book of *Contra Julianum*, where Augustine turns from the nature of sin and free will to the person of Christ himself. This section examines how the Pelagian understanding of Christ’s humanity necessarily follows from their denial of original sin, and Augustine shows why this produces an inadequate Christology.
Augustine begins by presenting Julian’s claim that Christ was born “under the same condition” as all other human beings. For Julian, this means that Christ possessed exactly the same kind of human nature that Adam possessed before the fall: a nature that was created good, with free will, and with the capacity to choose either good or evil. Julian argues that if Christ had not been born under this same condition, then he would not have been fully human. “If Christ was not born under the same condition as other men,” Julian writes, “then he did not have true humanity.” Augustine quotes Julian directly:
“Christ was born under the same condition as other men, that is, under the condition of free will, so that he could be righteous by his own choice.”
Augustine immediately identifies the problem with this claim. If Christ was born under exactly the same condition as every other human being, then he was born with the same concupiscence, the same ignorance, the same difficulty in doing good, and the same mortality that afflicts the rest of humanity. But this cannot be, because Christ was born of a virgin, without the involvement of sexual concupiscence, and the Scriptures testify that he was without sin. Augustine presents the orthodox alternative: Christ assumed human nature in its fallen state, but without sin itself. He took on the penalties of Adam’s sin — mortality, suffering, hunger, thirst, weariness — but not the guilt or the moral corruption. This is the distinction between taking on the *effects* of sin and taking on *sin itself*. Augustine writes: “Christ took our infirmities, but not our iniquities.”
Augustine then unpacks what this means for the Pelagian position. If Julian insists that Christ was born under the same condition as other humans, then he must also admit that Christ was born with concupiscence. But concupiscence, as Augustine has already argued in Book Two, is itself a wound from sin, a disorder in the soul that inclines toward evil. If Christ had concupiscence, then he would have had an internal struggle against evil desires, which the Gospels nowhere describe. Moreover, if Christ had concupiscence, then he would have needed to be cleansed from it — but the Church has never taught that Christ needed baptism for the forgiveness of sins. Augustine presses the logic: Julian’s Christology reduces Christ to a mere human who saved himself by his own free will, rather than the divine savior who redeems humanity from within its fallen condition.
The deeper issue here is the Pelagian assumption that human nature as it exists after the fall is identical to human nature as it existed before the fall. For Augustine, this is a catastrophic error. Human nature after the fall is wounded, weakened, and enslaved to sin. Christ assumed this wounded nature, but healed it by his very assumption of it. The union of the divine Word with human nature in the Incarnation was itself a redemptive act: by taking on flesh, Christ began the work of restoring what was damaged. Augustine uses the analogy of a physician who takes on the patient’s illness in order to cure it — not by becoming ill himself, but by entering into the condition of the sick. Christ entered into our fallen humanity, but without being subject to its moral corruption, and by doing so he made possible the healing of that corruption for all who are united to him.
Book Nine: The Pelagian View of Marriage — Procreation Without Concupiscence?
In Book Nine, Augustine addresses Julian’s most sustained defense of marriage and procreation. Julian has argued that if Augustine’s view of concupiscence is correct, then marriage itself is evil, because marriage is the context in which concupiscence is acted upon. Augustine must show that marriage is good even while the concupiscence that accompanies it after the fall is not.
Julian’s argument is straightforward: God instituted marriage in the Garden of Eden before the fall. Therefore, marriage must have existed as a good institution without any element of sin. If there was concupiscence involved in the act of procreation before the fall, then concupiscence itself is good. If there was no concupiscence before the fall, then Augustine’s claim that concupiscence is a wound from sin makes marriage after the fall into something sinful. Julian writes: “Either marriage is good and concupiscence is good, or marriage is evil and concupiscence is evil. There is no middle ground.” Augustine responds:
“Marriage is good, and concupiscence is evil. The good of marriage does not make concupiscence good, nor does the evil of concupiscence make marriage evil.”
Augustine develops this distinction with precision. The good of marriage consists in three things: fidelity (the mutual faithfulness of the spouses), offspring (the procreation and raising of children), and sacrament (the indissoluble bond that symbolizes the union of Christ and the Church). These goods remain even when the act of procreation is accompanied by concupiscence. The concupiscence is not the intention of the married couple — they do not marry in order to experience concupiscence, but in order to have children and to live in faithful union. The concupiscence is a consequence of the fallen state, not the purpose of the marital act. Augustine uses the analogy of a man who limps because of a wound: the limping is not the purpose of walking, but a result of injury. Similarly, the concupiscence that accompanies procreation is a result of the wound of original sin, not a part of the original design of marriage.
Augustine then addresses the question of whether there was concupiscence in Paradise before the fall. He argues that there was not. In the original state, Adam and Eve would have engaged in procreation through a calm, rational act of the will, without the disorder of lust that now accompanies the act. The sexual organs would have obeyed the will as fully as the hand or the foot obeys the will. Augustine acknowledges that this is difficult for fallen humans to imagine, because we have no experience of such a state. But he insists that this is what the original creation must have been like: a complete harmony between the body and the soul, with no rebellion of the flesh against the spirit.
The crucial point for Augustine is that even though concupiscence is evil, it does not make the children born through it evil in the sense of being personally guilty. The children inherit the stain of original sin, but this is a deprivation of grace, not a personal choice. Baptism washes away this stain. And the children themselves, through no fault of their own, are born into a condition that requires healing. Augustine insists that the parents who procreate within marriage are not sinning by doing so — the marital act is not itself sinful, even though it is accompanied by concupiscence. The sinfulness lies in the concupiscence itself, not in the intention of the parents.
Book Ten: The Pelagian Attack on Infant Baptism — Is It Merely for Remission of Personal Sins?
Book Ten brings Augustine to the most practical and urgent consequence of the entire debate: the meaning of infant baptism. Julian has argued that if infants have no personal sins, then baptism cannot be for the remission of sins in their case. Therefore, infant baptism must be for some other purpose — perhaps for sanctification, adoption into the Church, or elevation to a higher state.
Julian’s position is consistent with his denial of original sin. If there is no inherited sin, then there is nothing to forgive in an infant. Baptism for infants, he argues, must be understood as a consecration or a dedication to God, not as a washing away of guilt. He writes: “Infants are baptized not because they have any sin, but because they may receive the kingdom of God.” Julian points to the practice of the Church: infants are baptized, but they do not confess their own sins, nor do they have any personal sins to confess. Therefore, the baptism of infants must be for the purpose of obtaining a greater good, not for remitting an existing evil.
Augustine responds with the universal practice of the Church, which has always baptized infants for the remission of sins. He quotes the baptismal formula used throughout the Church: “I baptize you in the name of the Father, and of the Son, and of the Holy Spirit, for the remission of sins.” If infants have no sins, why does the Church pray for their sins to be forgiven? Augustine writes:
“If infants have no sin, why do we rush them to baptism? Why do we exorcise them? Why do we renounce the devil in their name? The Church’s own practice testifies that something is there which needs to be expelled.”
Augustine points to the exorcism that precedes baptism in the ancient rite. The infant is exorcised, and the devil is renounced on the infant’s behalf. If the infant had no connection to the devil — no inherited corruption — then the exorcism would be meaningless. But the Church has always understood that infants are born under the power of the devil because of original sin, and that baptism delivers them from this bondage.
Augustine then addresses the question of what would happen to an unbaptized infant who dies. He is careful not to condemn such infants to the same punishment as those who commit personal sins, but he insists that they cannot enter the kingdom of God. There is a distinction between eternal life and the kingdom of God: unbaptized infants suffer the loss of the beatific vision, though not the torments of hell. This is a mild punishment, but it is still a punishment — and it demonstrates that there is something in them that needs to be removed. If they had no inherited sin, they would have no barrier to entering the kingdom. The fact that they do have a barrier shows that original sin is real.
The Pelagian position, Augustine argues, would make the baptism of infants into an empty ceremony, a pious gesture without any real effect. But the Church has never understood it that way. The Church baptizes infants because it believes they are born in a state of spiritual danger, from which only the grace of Christ can rescue them.
Book Ten: The Pelagian Attack on Infant Baptism — Is It Merely for Remission of Personal Sins? (Continued)
We are in the heart of Book Ten, where Augustine has just demonstrated that the universal practice of infant baptism in the Church proves the reality of original sin, and that this cannot be reduced to a mere ceremony for the remission of sins the infant could not have committed personally.
Augustine now anticipates and dismantles the final Pelagian objection to this argument. The Pelagians, he writes, sometimes concede that infants are baptized, but they claim this baptism is for a purpose other than the remission of original sin. They argue that infants are baptized so that they may be “sanctified in Christ” and “adopted as sons of God,” but not because they need cleansing from any inherited stain. In this view, baptism becomes an adoption ceremony rather than a cleansing from sin. Augustine finds this distinction utterly false. He argues that the New Testament consistently presents baptism as a bath of regeneration and renewal, a washing away of sins. To separate adoption from remission is to tear apart what Scripture has joined together.
Augustine presses the point with relentless logic. If infants are not born with original sin, then they are already members of the kingdom of God by virtue of their natural birth. They would already be holy, already adopted, already sons of God. Why then would they need a ceremony to make them what they already are? The very fact that the Church believes they need to be baptized—that they need to be reborn of water and the Spirit—shows that their natural birth has left them in a state that is not yet the state of grace. He writes with characteristic force that if infants are not under the dominion of the devil through original sin, then why does the exorcism and renunciation of Satan precede their baptism? The Church, in its ancient and universal practice, breathes upon the infant, exorcises the devil from it, and commands the unclean spirit to depart. This would be a monstrous and meaningless ritual if the infant were not in some way bound to the power of darkness.
“If infants are not held captive by the devil through the contagion of original sin, then why are they exorcised? Why is the devil commanded to depart from them? This would be a mere theatrical performance, not a solemn rite of the Church.”
The Pelagian position, Augustine argues, reduces the Church’s liturgy to an absurd charade. The Church does not perform these rites as a formality or a poetic gesture. It performs them because it believes that every human being, from the moment of conception, is born into a state of alienation from God. The exorcism is real. The renunciation of Satan is real. The infant, though incapable of personal sin, is still in need of liberation from the power of the evil one who holds dominion over the fallen race.
Augustine then turns to the specific case of infants who die without baptism. The Pelagians, with their denial of original sin, are forced to argue that such infants go to eternal life, even to the kingdom of heaven. They cannot say that these infants suffer any loss, because they have no sin to be forgiven. But Augustine finds this position contrary to Scripture and to the teaching of the Church. He cites John 3:5, where Christ says, “Unless a man be born again of water and the Spirit, he cannot enter the kingdom of God.” If baptism is necessary for entrance into the kingdom, then unbaptized infants cannot enter that kingdom. They are not condemned to the fire of hell—Augustine does not assert that—but they are excluded from the beatific vision. They suffer what later theology would call the poena damni, the punishment of loss. They do not experience the positive torments of the damned, but they do not experience the joy of God’s presence.
This is a severe doctrine, and Augustine knows it is difficult. But he insists that it follows necessarily from the data of revelation. If Christ is the only way to the Father, and if baptism is the ordinary means by which we are incorporated into Christ, then those who die without baptism cannot be incorporated into Christ. And if they cannot be incorporated into Christ, they cannot see the face of God. The mildness of their punishment—mere exclusion from the kingdom, without positive suffering—does not change the fact that they are cut off from the ultimate end for which they were created. This is not cruelty on God’s part, Augustine argues. It is a consequence of the fall. Every human being deserves eternal punishment for the sin of Adam. That some are saved at all is an act of sheer mercy. That unbaptized infants suffer only the loss of the beatific vision, and not the torments of hell, is a sign of God’s goodness, not his severity.
The Pelagian position, by contrast, makes baptism into a kind of optional extra—a nice thing to have, but not strictly necessary for salvation. Augustine will not accept this. He argues that the Church has always believed that baptism is necessary for salvation, and that this necessity applies even to the youngest of children. The Church does not baptize infants because it wants to make them better members of the human race. It baptizes them because they are in a state of spiritual death, and only the grace of Christ can raise them to life.
Book Eleven: Confronting the Pelagian Version of Christ — A Sinless Man by His Own Power
Augustine now moves into Book Eleven, where he confronts the Pelagian view of Christ’s sinlessness. The Pelagians, he explains, affirm that Christ was without sin, but they do so in a way that makes him merely an example of what human nature can achieve by its own efforts. In their system, Christ is not fundamentally different from other righteous men like Abraham or Moses. He simply succeeded perfectly in doing what all human beings are capable of doing—keeping the law without transgression. His sinlessness was a matter of will, not of nature. He was born without sin because he chose not to sin, not because he was ontologically different from the rest of humanity.
Augustine finds this view deeply inadequate. If Christ is merely a man who succeeded where others failed, then he is not a savior but a model. He shows us what we could do if we tried hard enough, but he does not give us the power to do it. The Pelagian Christ is a moral teacher, not a redeemer. He is the supreme example of human achievement, but he is not the divine Word made flesh who transforms human nature from within.
Augustine argues that the scriptural witness presents Christ as something far greater. He is the Word who was in the beginning with God and who was God. He took on flesh not simply to show us how to live, but to heal the wound of original sin. He was born of a virgin, not because virgin birth is a sign of moral purity, but because his conception was a direct act of God, bypassing the normal transmission of original sin. Christ’s sinlessness was not a matter of willpower. It was a matter of nature. He did not have the fallen human nature that we have. His humanity was assumed directly from the Virgin by the power of the Holy Spirit, and it was therefore free from the stain of concupiscence.
“Christ was not born under the same condition as other men. He was conceived without concupiscence, born without sin, not because he chose to avoid sin, but because he had no sin to inherit.”
The Pelagians, Augustine argues, fail to understand the depth of the human condition. They think that sin is a series of bad choices, and that grace is merely external assistance—knowledge of the law, forgiveness of past sins, the example of Christ. But Augustine insists that sin is a disease that infects human nature itself. Christ came not merely to forgive sins, but to heal the source of sin. He came to give us a new nature, not just a new set of instructions.
Augustine also addresses the Pelagian claim that Christ, like all human beings, was born under the necessity of dying, and that his death was a natural death rather than a punishment for sin. The Pelagians argued that since Christ died, death cannot be a punishment for sin—otherwise Christ, who was sinless, would not have died. But Augustine counters that Christ’s death was a voluntary act, not a necessity of nature. He took on mortality freely, in order to share in our condition and to transform it from within. His death was not a punishment for his own sin—he had none—but a sacrifice for the sins of others. He died because he chose to die, not because he was subject to the law of death that binds the rest of humanity.
Augustine’s Christology is thus deeply intertwined with his doctrine of original sin. Christ is the second Adam, the new head of the human race, who comes to undo what the first Adam did. The first Adam brought sin and death into the world. The second Adam brings righteousness and life. But this second Adam is not merely a human being who succeeded where the first failed. He is the Son of God, who takes on human nature without taking on its fallenness. He is sinless by nature, not by will. And it is this sinlessness that makes him capable of saving us. A merely human savior could not heal the wound of original sin, because he would be subject to it himself. Only a savior who is free from sin can free others from its power.
Book Twelve: The Question of Predestination and Grace — A Final Clarification
In Book Twelve, Augustine turns to the question of predestination, which is the logical conclusion of his entire argument. If original sin has corrupted human nature so deeply that no one can be saved without grace, and if grace is a free gift that God gives to some and not to others, then it follows that some are predestined to salvation and others are not. Augustine does not shrink from this conclusion. He embraces it as the clear teaching of Scripture.
Augustine begins by summarizing the Pelagian alternative. The Pelagians believe that God’s predestination is based on his foreknowledge of human merit. God sees in advance who will believe and who will not, and he predestines those whom he foresees will believe. In this view, predestination is not the cause of salvation but the result of God’s advance knowledge of human choices. The human will remains autonomous. God simply ratifies what he knows humans will freely choose.
Augustine rejects this completely. He argues that predestination is not based on foreknowledge of merit, but on God’s sovereign choice. God does not choose us because he foresees that we will believe. He chooses us so that we will believe. Faith itself is a gift of God, not a human achievement. Augustine cites Ephesians 2:8-9: “For by grace you have been saved through faith, and that not of yourselves, it is the gift of God, not of works, lest anyone should boast.” He argues that even the faith by which we believe is given to us by God. We do not produce it out of our own resources. It is a grace that God works in us.
“God does not choose us because we are holy; he chooses us so that we may be holy. He does not predestine us because he foresees our merits; he predestines us so that we may have merits.”
Augustine then addresses the difficult question of why God chooses some and not others. He does not pretend to have a full answer. He appeals to the inscrutable wisdom of God, who works all things according to the counsel of his own will. He argues that the human mind cannot fathom the depths of God’s judgments. We know that God is just, and therefore whatever he does is just. We know that God is merciful, and therefore his choice to save some is an act of mercy. He is not unjust to those whom he does not choose, because they deserve punishment for their sins. He is merciful to those whom he does choose, because he gives them what they do not deserve.
The Pelagian objection to this is that it makes God the author of sin. If God does not give grace to some people, and they therefore sin and are damned, how can God be just? Augustine responds that God is not the author of sin. Sin comes from the human will, which is free to choose evil. God does not cause anyone to sin. He simply leaves some people in the state they have chosen. He does not give them the grace that would enable them to choose the good, but he does not force them to choose evil. They choose evil because their fallen nature inclines them to it. God’s withholding of grace is not the cause of their sin; it is simply the absence of a remedy for a disease they already have.
Augustine also addresses the objection that predestination makes human effort meaningless. If salvation is entirely in God’s hands, why should we strive to live good lives? Augustine responds that predestination is not a license to sin. On the contrary, it is the foundation of all good works. Those whom God has predestined to salvation are also predestined to be conformed to the image of his Son. They are predestined not only to the end—salvation—but also to the means—holiness of life. The grace of God does not destroy human effort; it makes human effort possible. We work because God works in us, and we know that our labor is not in vain because it is part of God’s eternal plan.
Book Thirteen: Against the Pelagian Interpretation of the Lord’s Prayer
Book Thirteen is devoted to the Pelagian interpretation of the Lord’s Prayer. The Pelagians, Augustine argues, have a superficial understanding of what it means to pray “Forgive us our trespasses.” They believe that this prayer is for the remission of daily, venial sins that even the righteous commit. But they insist that it is not a prayer for the remission of original sin, because they deny that original sin exists in the baptized.
Augustine takes this as an opportunity to show how the practice of prayer undermines the entire Pelagian system. He argues that the Lord’s Prayer is given to Christians—to the baptized, to those who are already members of the Church. If the Pelagians are correct, and the baptized have no sin, then why would they need to pray for forgiveness? The very fact that Christ taught his disciples to pray “Forgive us our trespasses” proves that even the righteous have sins that need forgiveness.
Augustine goes further. He argues that the Lord’s Prayer is not only for the remission of daily sins, but also for the remission of the ongoing effects of original sin. Even after baptism, the concupiscence remains. It is not imputed as sin to those who are in Christ, but it is still a source of daily failings. The just person sins seven times a day, as Scripture says. And for those sins, the just person must seek forgiveness. The Pelagian denial of this reality leads to spiritual pride. It makes people think they are sinless when they are not.
“If we say that we have no sin, we deceive ourselves, and the truth is not in us. This is the teaching of Scripture, and it applies to every Christian, from the greatest to the least.”
Augustine also examines the petition “Lead us not into temptation.” He argues that this prayer acknowledges that human beings are weak and that they need God’s help to avoid sin. The Pelagians, with their confidence in the power of the human will, have no real need for this petition. They believe that they can resist temptation by their own efforts. But Augustine insists that no one can resist temptation without the grace of God. The prayer for deliverance from temptation is an act of humility. It is an acknowledgment that without God’s help, we will fall.
The Pelagian reading of the Lord’s Prayer, Augustine concludes, is a reading that empties the prayer of its meaning. It turns the Christian life into a display of self-sufficiency. But the true Christian life is a life of dependence on God, a life of constant prayer, a life of continual confession of sin and reception of grace. The Lord’s Prayer is the perfect expression of this dependence. It teaches us to ask for our daily bread, for forgiveness, for deliverance from evil. It teaches us that we need God at every moment, for everything. The Pelagians, in their pride, think they do not need this. But the Church knows better.
Book Fourteen: The Counter-Argument from the Old Testament — Job and the Righteous Who Sinned
In Book Fourteen, Augustine turns to the Pelagian use of Old Testament figures, particularly Job, to argue that there were people who lived without sin. The Pelagians point to Job as a man who was described by God himself as “blameless and upright.” They argue that if Job could be sinless, then original sin cannot be universal. The human will, given the right circumstances and the right effort, can achieve sinlessness.
Augustine responds by examining the book of Job in detail. He acknowledges that Job is described as blameless, but he insists that this blamelessness is relative, not absolute. Job was blameless in comparison with other men of his time. He was blameless in the sense that he did not commit the gross sins of idolatry, adultery, or murder. But he was not sinless in the absolute sense. Augustine points to Job’s own words: “I have sinned; what shall I do to you, O watcher of men?” Job himself confesses sin. He offers sacrifices for his children, fearing that they may have sinned. He acknowledges his own imperfection. The Pelagians seize on one description of Job and ignore the rest of the book.
Augustine also argues that even if Job had been absolutely sinless in his conduct—a possibility he does not grant—he would still have been subject to original sin. He would still have been born with the wound of concupiscence. His sinlessness of conduct would have been a gift of grace, not a natural achievement. God preserves some people from actual sin, but he does not remove original sin from them until they are incorporated into Christ. Job, living before the coming of Christ, could not have been freed from original sin through baptism. He could only have been cleansed through faith in the future Redeemer.
“Even the most righteous of the Old Testament saints were in need of a savior. They were saved by faith in Christ to come, not by their own perfect obedience.”
Augustine then extends this argument to all the Old Testament figures that the Pelagians cite: Noah, Abraham, Isaac, Jacob, Moses, David, and the prophets. All of them were righteous, but none of them was sinless. All of them were saved by grace, not by their own merits. David, the man after God’s own heart, committed adultery and murder. Moses, the great lawgiver, was not permitted to enter the promised land because of his sin. Noah, the preacher of righteousness, became drunk after the flood. These examples, far from proving the Pelagian thesis, reinforce Augustine’s argument. Even the greatest saints were sinners. Even they needed the mercy of God.
The Pelagian reading of the Old Testament, Augustine argues, is a reading of pride. It takes isolated verses and uses them to build a system that contradicts the whole of Scripture. The Scriptures consistently teach that all have sinned and fall short of the glory of God. They consistently teach that no one is justified by the works of the law, but only through faith in Christ. The Pelagians have ignored these central truths and have built their doctrine on a few ambiguous passages. Augustine’s method is the opposite. He takes the whole witness of Scripture, from Genesis to the New Testament, and shows how it coheres around the doctrine of original sin and grace.
Book Fifteen: The Final Assault — Against the Pelagian Doctrine of Impeccability
In Book Fifteen, the final book of *Against Julian*, Augustine makes his last and most comprehensive assault on the Pelagian doctrine of impeccability—the claim that it is possible for a human being, by the power of the will and with the help of grace, to live a life entirely free from sin. The Pelagians, Augustine says, have reduced the Christian life to a moral achievement. They think that the goal of the Christian life is to attain a state of sinlessness, and that this state is attainable in this life through sufficient effort.
Augustine dismantles this claim by appealing to the universal experience of Christians. He asks his readers to examine their own hearts. Has anyone ever lived a day without sin? Has anyone ever loved God with all their heart, soul, mind, and strength, without any distraction or imperfection? Has anyone ever loved their neighbor as themselves, without any trace of selfishness? Augustine says no. He argues that the greatest saints have been the most conscious of their sinfulness. The closer one draws to God, the more one’s own sinfulness becomes apparent. The Pelagians, by contrast, have a shallow understanding of sin. They think of sin only in terms of external actions. But Augustine insists that sin includes the inner movements of the heart: pride, envy, lust, greed, anger, sloth. These are present even in the most outwardly righteous lives.
“The whole life of the faithful on earth is a struggle against concupiscence. We fight against it daily, but we do not conquer it fully until we are freed from this mortal body.”
Augustine also argues that the Pelagian doctrine of impeccability undermines the necessity of the Eucharist and of daily penance. If the Christian can achieve sinlessness, then why do we pray “Forgive us our trespasses” every day? Why do we approach the altar of God with humility, confessing that we are unworthy to receive the body and blood of Christ? The Pelagian doctrine would render these practices unnecessary. It would turn the Christian life into a self-help program rather than a constant reception of divine grace.
Augustine concludes by returning to the theme of the two Adams. The first Adam brought sin and death into the world. The second Adam brings righteousness and life. But the righteousness of the second Adam is not something we achieve. It is something we receive. We are not made righteous by our own efforts, but by being incorporated into Christ through faith and baptism. Even then, the process of sanctification is gradual. We are being transformed from glory to glory, but we will not reach the fullness of that transformation until the resurrection. In this life, we are saved by hope. We are righteous in hope, but not yet in possession. We have the firstfruits of the Spirit, but we groan within ourselves, waiting for the redemption of our bodies.
The Pelagian doctrine of impeccability, Augustine argues, is a form of spiritual presumption. It denies the reality of the struggle against sin. It denies the need for daily grace. It denies the truth of the human condition. Against this, Augustine sets the humble confession of the Church: “If we say that we have no sin, we deceive ourselves, and the truth is not in us.” This is not a confession of despair. It is a confession of hope. We do not claim to be sinless. But we trust in the one who is sinless. We trust in Christ, who died for our sins and rose for our justification. And we look forward to the day when we will be fully and finally free from sin, when the body of this death is swallowed up by life.
Thus Augustine ends his great work *Against Julian*. It is a defense of the Catholic faith against what he sees as a novel and dangerous heresy. It is a systematic exposition of the doctrines of original sin, grace, baptism, and Christology. It is a work of profound theological depth, written with passion and precision, and it remains one of the most important texts in the history of Christian thought.
