What is the problem of evil?

Long before modern philosophy gave it a formal name, people wrestled with the reality of suffering in a world supposedly ruled by a good God. Job cried out from the depths of undeserved loss, and the psalmists repeatedly asked God how long he would allow the wicked to prosper while the innocent suffered (Psalm 13:1-2). The problem of evil is not a modern invention; it is one of the oldest and most deeply felt objections to faith in God.

Stated formally, the problem goes like this: if God is all-powerful, he could prevent evil; if God is all-good, he would want to prevent evil; yet evil exists; therefore, either God is not all-powerful, not all-good, or does not exist.

Philosophers usually distinguish between the logical problem of evil, which claims God's existence is logically incompatible with any evil at all, and the evidential problem of evil, which argues that the sheer amount and intensity of suffering in the world makes God's existence unlikely, even if not strictly impossible. Most philosophers today, including many atheists, acknowledge the logical version has been substantially answered.

The evidential version carries more emotional and philosophical weight, since it doesn't require proving a contradiction, only that the scale of suffering seems hard to reconcile with a loving God's purposes.

Knowing which form of the problem you're facing changes how you respond. If a skeptic claims evil makes God's existence logically impossible, the free will defense and similar arguments can show the claim fails on its own terms. But if someone is instead expressing the deeper, more personal sense that the sheer weight of suffering makes God seem unlikely or uncaring, arguments alone rarely reach the real wound; compassion, honesty about mystery, and the person of Christ tend to matter more than logical precision in that moment.

It helps to distinguish two categories. Moral evil refers to suffering caused by the free choices of moral agents—murder, cruelty, betrayal, oppression. Natural evil refers to suffering from impersonal causes—earthquakes, disease, famine. Christian theology addresses each somewhat differently: moral evil flows from humanity's misuse of the freedom God gave us (Genesis 3), while natural evil is often tied to the broader brokenness that entered creation through the fall, described as creation itself 'groaning' under corruption (Romans 8:22).

Neither category catches God off guard; Scripture presents him as sovereign over a world he permits to be genuinely broken for a time, while still working within and even through that brokenness toward his good purposes.

Scripture never pretends evil isn't a real and painful problem; entire books like Job and Lamentations exist precisely to sit with that pain honestly. But the Bible also insists that God is not evil's author, that he did not create a world with suffering built in from the start, and that evil entered through the rebellion of angels and humans, not through any flaw in God's original design (Genesis 1:31; Genesis 3).

Crucially, the Bible presents a God who enters into suffering rather than remaining distant from it. In Jesus Christ, God himself experienced betrayal, torture, and death, taking evil's worst blow directly upon himself (Isaiah 53:3-5).

Christians offer several responses, not as a complete explanation of every individual instance of suffering, but as reasons why a good God might permit evil in general. Genuine love requires genuine freedom, and freedom carries the real possibility of misuse (the free will defense). Some suffering also produces character, dependence on God, and compassion that could not be developed otherwise (Romans 5:3-4; James 1:2-4).

Above all, the story of Joseph offers a template: what his brothers meant for evil, God intended for good, to save many lives (Genesis 50:20). We may not always see the good purpose in our own lifetime, but the pattern shows God can work redemptively even through terrible evil, without ever calling the evil itself good.

The most powerful Christian response to the problem of evil is not a philosophical argument at all—it is the cross. There, the greatest evil in history, the murder of the sinless Son of God, became the very means of the greatest good, salvation for all who believe (Acts 2:23-24). God does not merely explain evil from a safe distance; he absorbed it.

And evil does not get the final word. Revelation promises a day when God will wipe every tear away and there will be no more death, mourning, crying, or pain (Revelation 21:4). Until then, believers hold on to the promise that God works all things, even painful things, together for good for those who love him (Romans 8:28).

Understanding the problem of evil intellectually is one thing; knowing how to be present with someone actually suffering is another. When a friend is grieving a miscarriage, a diagnosis, or a betrayal, walking through philosophical arguments rarely comforts them in the moment, and offering one too quickly can feel like a dismissal of their pain rather than genuine care. Job's friends actually began well, sitting with him in silence for seven days (Job 2:13); their mistake came later, when they started explaining his suffering instead of simply staying present with him in it.

There is a time for the arguments in this article—usually later, in a calmer moment, or when someone specifically asks for them—and there is a time simply to weep with those who weep (Romans 12:15). Holding both true, unhurried compassion and honest theological grounding, is part of what it means to love people well in a world still touched by evil.