Augustine on Free Will and Evil — Providence, Four Theories of Evil, and Divine Foreknowledge

Introduction — Providence and the Problem of Evil

The previous lecture established Augustine’s concept of God’s four properties: immutability, creativity, eternity, and all-goodness. This lecture traces the consequences of those properties — particularly the consequences of God’s goodness — for two of the most fundamental questions in philosophy of religion: why does evil exist in a world created by a good and powerful God, and whether human free will is compatible with divine foreknowledge.

The lecture begins with one of Augustine’s most theologically distinctive contributions: the concept of providence. It is providence — God’s active, caring, personal involvement in each human life — that makes the problem of evil philosophically urgent. And it is the analysis of evil that leads naturally into the problem of free will.

Table of Contents

1. Providence — God as Active, Caring Father

Having established that God is all-good and that this goodness is a personal, loving goodness directed toward human beings, Augustine attributes to God a further property that Greek philosophy had not associated with ultimate reality: providence.

Providence defined:  God does not merely create the world and leave it to run on its own. God continuously watches over it, cares for it, sustains it, and works within every individual life toward their ultimate good. Providence is God’s active, ongoing, personalised oversight of creation — not just in general, but specifically for each person.

The provident fund analogy: The word ‘provident’ appears in the phrase ‘provident fund’ — a financial scheme in which a person invests consistently over time in order to secure their future wellbeing. The investment is made in the present with a view to future good. God’s providence is structurally similar: God acts in every present moment with an eye to each person’s ultimate future good. Every event in a person’s life — including those that appear painful or harmful — is potentially an investment in their salvation.

This is precisely what distinguishes Augustine’s God from the gods of Greek philosophy. Aristotle’s Unmoved Mover knows nothing and cares about nothing beyond itself. Plato’s Demiurge orders the world rationally but without personal love — like a brilliant engineer who designs an excellent building but does not love the people who will live in it. The Stoic Logos is a universal rational principle pervading matter — ordered and beautiful, but incapable of a personal relationship with individuals.

Augustine’s God, by contrast, knows each person individually. He hears prayer. He responds. He plans for each person’s good. He pursues people even as they flee from him — as Augustine’s own story demonstrates so vividly. This personal, caring, responsive God is theologically and philosophically very different from anything in Greek philosophy.

This difference in the character of God may partly explain a historical puzzle: why did Christianity spread through the Roman world more successfully than Stoicism, despite Stoic philosophy being intellectually sophisticated and widely admired? The Stoic God — the Logos — is a rational principle. It cannot hear a prayer; it cannot respond to suffering; it cannot love a particular person. Augustine’s God can and does all of these things. For people in genuine distress — and first-century Roman society contained enormous distress — the loving Father is infinitely more attractive than the impersonal rational principle.

But providence creates a philosophical problem immediately. If God actively cares for every person, plans for every person’s good, and has unlimited power to act — why does evil exist? Why does the loving Father allow death, illness, suffering, and moral corruption? The problem of evil is not merely a problem for an indifferent creator. It is most acute precisely when the creator is conceived as a personal, caring, all-powerful God. This is why Augustine must address it.

2. Two Types of Evil — Natural and Moral

Before presenting his answers to the problem of evil, Augustine makes a foundational distinction that organises the entire discussion. Evil is not a single undifferentiated phenomenon — it comes in two fundamentally different forms.

The crucial claim in this distinction is the causal relationship: moral evil is primary; natural evil is its consequence. Death, illness, physical suffering, the hostility of the natural world toward human beings — these are not brute facts about reality that exist independently of human action. They are the downstream effects of the original misdirection of the human will. To understand why the world contains death and suffering, you must first understand how and why free will went wrong.

This sequencing is philosophically important because it means that the problem of evil cannot be addressed adequately by looking only at natural evil. Natural evil is a symptom; moral evil is the disease. Augustine’s four answers address both, but the deepest answer — the one that explains the root of everything — concerns the will and its misuse.

3. Four Answers to the Problem of Evil

A note on Augustine’s method: These four answers are not collected in one place in Augustine’s writings. They appear across different books, essays, and arguments written at different points in his life. Most secondary literature discusses only the Privation Theory. All four are necessary for a complete understanding of his position, and each addresses a different dimension of the problem.

Answer 1 — The Privation Theory

The most widely known of Augustine’s four answers is the Privation Theory, which he derived from his encounter with Neoplatonism and Plotinus. It addresses the question: what IS evil, metaphysically?

The answer is radical in its simplicity: evil is not a thing at all. It is not a substance, not a force, not an independent entity. It is an absence — a privation — of goodness that should be present. This is the same analysis Augustine applied to solve the Problem of Evil in his transition away from Manichaeism: if evil is merely the absence of good rather than an independent substance, there is no need for a second evil god to explain it.

The darkness analogy: Darkness is not a substance. There is no ‘dark stuff’ that fills rooms when the light is off. Darkness is simply the absence of light. When you illuminate a room, you don’t remove darkness — you introduce light, and the absence of darkness follows. Similarly: evil is not a substance that God created or that a rival power introduces. It is the absence of goodness where goodness should be present.

The illness analogy: Illness is not a substance distinct from health. It is the absence — the privation — of the proper function that health represents. A diseased organ is not a organ containing a positive ‘disease substance’ — it is an organ that lacks the proper functioning it should have. Remove the dysfunction, restore the proper function, and health returns. Evil works the same way.

The malfunctioning phone: When a phone does not work properly, we say there is a fault — something is missing. We point to an absence: a missing component, a failed process, an absent connection. We do not say there is a ‘bad phone substance’ present. The defect is defined by what is NOT there. This is precisely how Augustine defines evil: what is not there (goodness) where it should be.

Connected to the Great Chain of Being: recall that in Augustine’s metaphysics, reality and goodness are co-extensive — more reality means more goodness. God is the highest reality and therefore the highest good. The created world has less reality than God, and therefore less goodness, but is still real and therefore good. Evil is where the chain runs thin — where goodness/reality has diminished below what ought to be present. It is the deficit on the scale of being.

Answer 2 — The Epistemic Theory

The second answer is less well-known but philosophically important, and it is grounded in Augustine’s own biography. Where the Privation Theory locates the deficit in things themselves (they lack goodness), the Epistemic Theory locates the deficit in us — in our lack of knowledge.

The Rome episode — Augustine’s personal illustration: Augustine’s mother Monica was desperate for him not to go to Rome. She feared it would take him further from Christianity and into spiritual danger. When Augustine left anyway — secretly, without telling her, waiting until she fell asleep and then departing — she was devastated. He later describes his own guilt and shame. But in retrospect, looking back from the vantage point of his conversion, he saw the entire episode differently: Rome led to Milan; Milan led to Ambrose; Ambrose led to his conversion. His secret departure — which appeared at the time as a painful act of abandonment toward his mother and a morally troubling act of deception — was, in the larger frame of God’s plan, the very step that brought him to salvation. What looked like evil was part of God’s greatest gift.

This is the structure of the Epistemic Theory: what appears evil from within our limited temporal perspective may be, from the perspective of God’s larger plan, a positive contribution to our ultimate good. We lack the knowledge to see the whole picture; our ignorance makes certain things appear evil when they are actually serving purposes we cannot yet understand.

The surgeon example: An uninformed bystander watches a surgeon making cuts into a patient’s body. From outside the frame of medical knowledge, this looks like an act of cruelty — deliberate harm inflicted on a helpless person. But the surgeon is healing the patient. The cuts are the path to health. The ignorance of the observer is what makes the healing look like harm.

Fire and poison: Fire appears purely dangerous — it burns and destroys. With knowledge of how to use fire, it becomes essential to human civilisation: warmth, cooking, metalwork. Poison appears purely harmful. With pharmaceutical knowledge, poison becomes medicine. Whether fire or poison appears as good or evil depends on our knowledge of how to relate to them properly. Two kinds of ignorance produce apparent evil: ignorance of God’s plan (which makes God’s good purposes appear as suffering), and ignorance of how to use things rightly (which makes good things appear dangerous).

The distinction between the Privation Theory and the Epistemic Theory is philosophically precise and important. The Privation Theory says: evil is in the things (they lack goodness). The Epistemic Theory says: evil is in our perception (we lack knowledge). These are different claims. The Privation Theory is metaphysical; the Epistemic Theory is epistemological. Together they provide complementary accounts of what evil is and why it appears as it does.

Answer 3 — The Mutability Theory

The third answer is perhaps the least discussed in secondary literature — so much so that it has no standard name. It addresses not what evil is (privation) or why it appears as it does (ignorance), but rather how evil became possible at all in a world created by a good God.

The key premises are simple. God is unchanging — immutable, as established in the previous lecture. But God created the world out of nothing. Because the world was not made from God’s own substance (which would be pantheism) but from nothing, the world does not share God’s immutability. The world is mutable — capable of change.

This mutability is itself a good. A world capable of change is a world with freedom — the freedom to develop, to grow, to respond, to choose. A rigidly fixed, unchangeable world would be like a stone: stable but incapable of genuine moral life. Freedom requires mutability.

But mutability entails a metaphysical possibility: the world can change in either direction. Toward God: more goodness, more reality, more of what it ought to be. Away from God: less goodness, less reality, less of what it ought to be. God gave the world the freedom to go either way. The world — specifically, the humans within it — chose to move away from God. That movement is what evil IS: not a positive substance, but a direction of change away from the highest good.

The Sub-Argument: Evil Presupposes Prior Goodness

Within the Mutability Theory, Augustine offers a striking argument that reverses the ordinary intuition about evil and goodness.

Blindness in eyes vs blindness in stones: Blindness is a defect of the eyes. It is an absence — the absence of the visual capacity that eyes are designed to have. But blindness is not a defect of a stone. We do not say a stone is blind. Why not? Because a stone was never made to see — there was no prior goodness of sight in a stone that could be absent. The defect of blindness only exists where the goodness of sight was first present as a proper function.

The general principle: a defect, a lack, an evil can only exist where there was first a goodness to be absent. Evil is parasitic on goodness — it cannot exist where goodness never was. Therefore the very existence of evil in something is evidence that goodness was first there. Evil testifies to prior goodness.

This argument reverses the intuitive charge that evil disproves goodness. Augustine uses the existence of evil as indirect evidence for the prior goodness of creation. If the world were simply bad through and through, there would be no defects — only absence. It is precisely because God made the world good that the world can go wrong.

Answer 4 — The Free Will Theory and Moral Evil

The fourth and most important answer addresses moral evil directly — the evil that originates in the human will’s deliberate choice to turn away from God.

God created human beings with free will — the capacity to choose among genuine alternatives without being compelled in any direction. Free will is itself a good: a being that chooses freely is capable of genuine morality and genuine love. A being that cannot choose is like a machine — it may do the right thing, but not in any morally meaningful sense. God’s gift of free will was therefore an expression of how highly He valued human beings.

The first humans — Adam and Eve — had this freedom. They were not predetermined to sin; sin was not built into their nature. They had the genuine capacity to choose God, who is the highest good, or to choose themselves, who are lesser goods. What they chose was themselves — the lesser good — motivated by pride: the desire to be autonomous, self-sufficient, above dependence on God.

This choice was not the creation of a new evil substance. It was a turning — a reorientation of the will away from the highest good toward a lower one. The direction changed; no new entity came into existence. But the consequences were catastrophic: human nature was corrupted, the relationship between humans and God was ruptured, and the natural world — which had been in harmony with humanity — became a place of suffering, decay, and death. Moral evil caused natural evil.

The Chain of Sin — From Adam to Grace

Adam’s sin created a condition that subsequent humans inherit. We are not born free in the way Adam was. Our will is already bent — oriented by default toward lesser goods, prone to self-preference, resistant to God. This is what Paul described and what Augustine recognised in his own experience: knowing what is right and being unable to do it consistently. The chain of sinful habit binds us, as Augustine described in the previous lecture.

Liberation from this condition requires divine grace — God’s freely given gift. This raises two further questions that Augustine addresses.

Why Grace Cannot Be Merit-Based

If grace were given on the basis of merit — rewarding those who had done enough good deeds, held the right beliefs, or lived virtuously enough — two problems would arise.

The pride problem: The root of all sin, as Augustine analyses it, is pride — the self-assertion that places the individual above God. If a person could earn grace through their own merit, they would have grounds for pride: ‘I earned this; God owed it to me.’ But pride is precisely the sin that grace is meant to cure. A merit-based grace would reinforce the very disposition it was designed to overcome — like a medicine that exacerbates the disease it treats.

The power problem: Consider exam grades. If a student writes an excellent answer, and the teacher gives them a poor grade, the student can appeal: to the principal, to a board, even to a court. Merit creates an entitlement that can be legally enforced. If grace were merit-based, humans could make analogous demands on God. They could argue that God owed them grace, and if He did not provide it, they could claim injustice. But God is all-powerful — nothing can force or constrain God. Grace must therefore be a free gift, not a contractual obligation.

The Debt Forgiveness Analogy — Is It Unjust to Give Grace to Some and Not Others?

Debt forgiveness: Suppose I have lent money to five different people, all of whom owe me debts. I decide to forgive the debt of one of the five — out of compassion, or generosity, or for reasons I keep to myself. The remaining four cannot complain: ‘You forgave his debt; why not mine?’ My response: the forgiven debt was a gift, not an entitlement. They still owe legitimate debts. My choosing to forgive one does not create an obligation to forgive all. Grace works the same way. All humans are sinners — all are in debt to God. If God chooses to extend grace to some and not others, those not chosen still owe their legitimate debt. They cannot claim injustice because they never had an entitlement to forgiveness.

This position is uncomfortable — it seems to make salvation arbitrary. Augustine is aware of the discomfort and does not fully resolve it. He holds that God’s choices are always good (because God is all-good), even when their reasons are hidden from us. The mystery of who receives grace and who does not belongs to the deeper mystery of divine providence that exceeds human understanding.

4. The Integrated Picture — From Creation to Grace

The four answers are not independent — they tell a single story when placed in sequence. The following table traces the narrative from God’s original creative act to the necessity of grace.

God’s Purpose in Allowing Evil — Education Through Freedom

A central question remains: if God is all-powerful, why not simply eliminate evil? Why allow it to persist? Augustine’s answer involves the deep connection between freedom, moral growth, and the character of love.

The mischievous child: A parent knows their small child is mischievous and might hurt themselves — reaching for electrical wires, sharp objects, dangerous household items. The parent has two options: tie the child to a chair (preventing harm by removing freedom), or teach the child about danger and why to avoid it (preserving freedom while building wisdom). A good parent chooses the second. Restraint produces safety but not moral growth. Education through freedom produces a person who genuinely understands and freely avoids what is harmful.

God chooses the second approach. He does not eliminate evil by making the world immutable or by removing human free will — because doing so would eliminate the conditions under which genuine moral choice is possible. Instead, He uses the existence of evil as the context within which humans can freely choose good — not because they are forced to, not out of fear of punishment, not for calculated gain, but freely, as an expression of who they genuinely are.

‘God wants us to freely choose goodness — not to be programmed machines that execute commands.’ A being that always does good because it cannot do otherwise is not morally praiseworthy; a being that freely chooses good when evil is possible demonstrates genuine moral character. This is what God is creating: not obedient machines, but free persons who choose love.

5. Divine Foreknowledge and Free Will — The Cicero Debate

The analysis of free will leads to one of the most famous debates in the history of philosophy of religion: can God’s foreknowledge be reconciled with human free will? Augustine addresses this directly in the City of God, responding to the Roman philosopher Cicero.

Cicero’s Argument in Detail

Cicero’s argument proceeds through a chain of logical steps, each following from the previous:

• If God foreknows all future events, those events will certainly happen exactly as God knows them.
• If they will certainly happen, they must happen — they are necessary, not contingent.
• If all future events are necessary, their causes are also necessary — fixed in advance.
• If all events and their causes are fixed in advance, this is FATE — bhagya — total determinism.
• If everything is fated, human choices are not genuinely free — they are predetermined.
• If choices are not genuinely free, there is no genuine moral responsibility.
• If there is no genuine moral responsibility, moral concepts (praise, blame, punishment, reward) are meaningless.
• Therefore: God’s foreknowledge must be denied to preserve the meaningfulness of morality.

Cicero chooses free will over divine foreknowledge. For Augustine, this is a catastrophic error: ‘By making humans free, Cicero has made them guilty — sinners without God’s knowledge, cut off from divine oversight.’ In solving one problem (preserving free will), Cicero creates a far worse one (denying God’s omniscience).

Augustine’s Counter-Argument — Knowledge ≠ Compulsion

Augustine’s counter-argument hinges on a distinction that Cicero’s argument implicitly denies: the distinction between knowing that something will happen and causing or compelling it to happen.

The tea example: You know your friend extremely well. You are absolutely certain that when you go to lunch together and the waiter offers tea or coffee, your friend will choose tea. You know this with complete confidence — not a guess, not a probability, but knowledge. Now: does your advance knowledge of your friend’s choice compel your friend to choose tea? Does it remove their freedom? Obviously not. Your friend freely chooses tea. Your knowledge of what they will freely choose does not create that choice — it follows from it. You know what they will freely do. You do not force them to freely do it.

The movie already seen: You watch a film with a friend who has already seen it. The friend knows what will happen in the next scene. Their foreknowledge does not control the film — the director wrote the script, and the film plays out as it was made, regardless of what any viewer in the cinema knows. The friend’s foreknowledge is perfectly accurate, but it exerts no causal force on the film’s events.

The weather app: Your phone’s weather application predicts rain tomorrow. If it rains tomorrow, your phone did not cause the rain. The prediction (knowledge of a future event) does not create the event. A forecast is not a command. Foreknowledge and causation are different things.

The fundamental error in Cicero’s argument, Augustine says, is confusing two different concepts: ‘it will happen’ (a statement about what a free agent will choose) and ‘it must happen’ (a statement about necessity and compulsion). Cicero treats them as if they are equivalent — as if knowing that something will happen is the same as knowing that something must happen. But they are not. Something can be known-that-it-will-happen while remaining genuinely free and contingent. God knows what you will freely choose; He does not force you to freely choose it.

Free Will as a Cause Known to God

Augustine adds a further point. God knows all causes — everything that happens has a cause, and God knows every cause. Human free will is itself a cause: it is the cause of human actions. Therefore God knows human free will and knows what it will produce. God’s foreknowledge of your choices includes foreknowledge of the free will that generates those choices. So God’s knowledge is not knowledge of a predetermined, compelled event — it is knowledge of a freely willed event, knowing the freedom along with the outcome.

Two Additional Points — Briefly

Augustine makes two further observations that he does not develop at length, but which are philosophically important.

First: the question ‘What did God know before humans acted?’ misuses the word ‘before’ when applied to God. As established in the previous lecture, God exists outside time — there is no ‘before’ in God’s experience. All moments of history are simultaneous in God’s eternal now. The temporal vocabulary that Cicero’s argument relies on simply does not apply to a timeless being. The question ‘What did God know before the creation?’ is grammatically coherent but metaphysically inapplicable.

Second: Providence and free will together raise the question of how God accomplishes everything while human freedom remains genuine. Augustine’s answer is enigmatic but honest: God accomplishes His plan through human free will — not by overriding it but by working through it. Human free choices are the very means by which God’s providential purposes are executed. How exactly this works — how both God’s sovereign plan and genuine human freedom can simultaneously be real — Augustine regards as one of the deep mysteries of divine wisdom, not fully comprehensible to finite minds.

Conclusion

Augustine’s treatment of evil and free will is not a single, neatly packaged argument. It is a family of complementary insights — each illuminating a different dimension of the problem — developed across different works, at different times, in response to different challenges.

The Privation Theory answers the metaphysical question: what is evil? It is the absence of goodness — not an independent substance but a deficiency. The Epistemic Theory answers the experiential question: why does evil appear real and terrible to us? Because we lack the knowledge to see God’s larger purposes. The Mutability Theory answers the historical question: how did evil become possible in a good creation? Because God gave the world the gift of mutable freedom, which carries the metaphysical possibility of turning away from God. The Free Will Theory answers the moral question: how did evil actually enter? Through the human will’s prideful choice to prefer itself over God.

These four answers are not in competition — they address different aspects of a multidimensional problem. Together they constitute the most comprehensive philosophical treatment of evil in the Patristic tradition.

The Cicero debate adds a further dimension: not just why evil exists, but whether, given God’s nature, free will can exist at all. Augustine’s resolution — that knowledge and compulsion are distinct, that God foreknows what free agents will freely do without that foreknowledge eliminating their freedom — is philosophically compelling, even if it does not dissolve every tension. The deeper mystery of how divine providence and human freedom are ultimately reconciled, Augustine leaves as what it genuinely is: a mystery exceeding human comprehension, but not therefore a contradiction.

Frequently Asked Questions

What is Augustine’s Privation Theory of evil, and why is it philosophically important?

The Privation Theory holds that evil is not a substance — not a positive entity, force, or thing — but a privation: the absence of goodness where goodness should be present. As darkness is not a substance but the absence of light, and as illness is not a substance but the absence of health, evil is the absence of the goodness that a thing ought to have. This is philosophically important for several reasons. First, it solves the monotheism problem: if evil were a positive substance, it would require an independent source — an evil god or principle, as the Manicheans claimed. The privation theory eliminates this requirement entirely. Evil has no independent source; it is simply where goodness has diminished or run out. Second, it preserves God’s goodness: God did not create evil, because evil is not something that can be created. It is what remains when goodness is absent. Third, it connects naturally to the Great Chain of Being: as reality and goodness are co-extensive (more being = more goodness), evil corresponds to the diminishment of being — the lower reaches of the chain where reality grows thin.

What is the Epistemic Theory of evil and how does it differ from the Privation Theory?

The Epistemic Theory holds that much of what appears evil to us appears so because we lack the knowledge to see God’s larger purposes. What looks like suffering, loss, or harm from within our limited temporal perspective may be, in the larger frame of divine providence, a positive contribution to our ultimate good — like a surgery that looks like cruelty to an uninformed observer but is actually healing. Augustine illustrates this with his own departure for Rome: what appeared to be an act of abandonment toward his mother turned out to be the step that led to his conversion. The Privation Theory and the Epistemic Theory are fundamentally different. The Privation Theory locates the problem in things themselves — they lack the goodness they ought to have. The Epistemic Theory locates the problem in us — we lack the knowledge to see the good that God is working. A world might contain genuine privations of goodness (privation theory) while we simultaneously misjudge other things as evil due to ignorance (epistemic theory). Both accounts are needed for a complete picture.

How does Augustine explain the origin of moral evil without making God responsible for it?

Augustine’s explanation is precise on this point. God created humans with free will — itself a genuine good. Free will means the capacity to choose among genuine alternatives without compulsion. God did not program humans to sin; He gave them the genuine freedom to choose rightly or wrongly. The first humans (Adam and Eve) used this freedom to choose the wrong thing: themselves rather than God, the lesser good rather than the highest good. This choice was motivated by pride — the desire to be self-sufficient, to be one’s own authority, to be like God without depending on God. Crucially, this choice was not the creation of a new evil substance. It was a turning: a reorientation of the will from the highest good toward a lower one. God is not responsible for this turning because God did not cause it — the free will God gave was the genuine freedom to turn in either direction, and humans chose the wrong direction on their own. God’s role was to create beings capable of genuine free moral choice — which required creating beings capable of choosing wrongly.

How does Augustine respond to Cicero’s argument that divine foreknowledge eliminates free will?

Cicero’s argument runs: if God knows what you will do, you must do it; if you must do it, you are not free. Augustine’s response turns on a single crucial distinction: knowing that something will happen is not the same as causing or compelling it to happen. Your advance knowledge that your friend will choose tea at lunch does not force your friend to choose tea — they freely choose it, and you know what they will freely choose. Your foreknowledge follows their freedom; it does not override it. The same applies to divine foreknowledge. God knows what you will freely do. That knowledge does not make your action necessary or compelled — it is knowledge of a free action, not a forced one. Cicero’s error is conflating ‘it will happen’ (a statement about what a free agent will do) with ‘it must happen’ (a statement about necessity). These are different claims. Something can be certainly known-as-future while remaining genuinely contingent and free. Augustine also adds two subsidiary points: the word ‘before’ does not apply to God, who is outside time; and human free will is itself one of the causes God knows, so God’s foreknowledge includes foreknowledge of the freedom that produces the choice — not just the choice in isolation.

Why does God allow evil to persist if He is all-powerful? And why is grace not given to everyone?

Augustine’s answer to the first question centres on the concept of education through freedom. God could eliminate evil by making the world immutable or by removing human free will. But a world without genuine freedom is a world without genuine moral choice — and genuine moral choice is the only context in which genuine moral character, genuine love, and genuine goodness can exist. A being that always does right because it cannot do otherwise is not morally praiseworthy; a being that freely chooses right when wrong was possible demonstrates genuine virtue. God’s goal is not obedient machines but free persons who freely choose love and goodness. Evil is the context — the risk — that makes genuine freedom meaningful. As for grace not being given to all: Augustine holds that all humans are sinners in debt to God. Grace — the forgiveness of that debt — is God’s free gift, not an entitlement that anyone can claim. If God forgives one debt freely, those whose debts are not forgiven have no grounds for complaint: they still owe a legitimate debt; forgiveness was a gift, not an obligation. Why God extends grace to some and not others Augustine regards as a mystery within divine providence — not arbitrary (because God is all-good), but not fully comprehensible to finite human minds.