Why Does Evil Exist?
The hardest question there is: if God is all-good and all-powerful, why is there evil? Christianity's answer is not a tidy formula but a crucified God — one who does not explain suffering from a distance but enters it.
Overview
This is the objection that empties more pews than any argument from biology or physics. Stated sharply (by Epicurus, then David Hume): if God is willing to prevent evil but unable, he is not omnipotent; if able but not willing, he is not good; if both able and willing, why is there evil at all? It deserves to be felt, not just answered. Any faith that cannot sit with a grieving parent in a hospital corridor is not worth having.
Christian thinkers have offered real answers, and they matter. The free-will defense notes that a world of genuine love requires genuine freedom, and freedom that cannot choose evil is not freedom at all — so much moral evil is the price of a creation capable of love rather than a set of puppets. The soul-making tradition (and Romans 5, 8) sees that some goods — courage, compassion, forgiveness, endurance — are impossible in a frictionless world. And the greater-good and free-process defenses argue that a stable, law-governed creation, open to real causes, will produce natural suffering as a side-effect of its very goodness. None of these "solves" evil; together they show the contradiction the atheist alleges has never actually been demonstrated.
But Christianity's deepest answer is not a theory; it is an event. We do not worship a God who watches suffering from a safe distance and offers explanations. We worship one who took on flesh, was betrayed, tortured, and killed — "a man of sorrows, and acquainted with grief" (Isa 53:3). Whatever else the cross means, it means God is not exempt from the pain of his world. And the resurrection is the promise that evil, though terribly real now, is temporary: a wound the world is being healed from, not its final shape. The Christian hope is not that suffering makes sense yet, but that one day "he will wipe away every tear" and we will see that it was worth it (Rev 21:4).
Wrestling with this
The honest objections — stated fairly, then answered. Doubt isn’t the enemy of faith; it’s often the road into a deeper one. Take these at whatever depth you need today.
If God is all-good and all-powerful, why doesn't he stop evil?Honest start
This is the question, and it deserves to be felt before it's answered. The classic dilemma assumes that a good, powerful God would have no possible reason to permit any evil — but that's the very thing no one has been able to prove. A world capable of real love, courage, and forgiveness seems to require real freedom and real stakes, which means the genuine possibility of evil. God permitting evil for the sake of goods that couldn't otherwise exist is not the same as God being indifferent to it. And crucially, "doesn't stop evil" is not the Christian claim. The claim is that God is in the process of stopping it — that he has entered the world in Christ to defeat it from the inside, and has promised a day when "death shall be no more, neither shall there be mourning" (Rev 21:4). The question is not whether evil wins, but when it ends.
Romans 8:18-23; Revelation 21:1-4; the free-will defense (Plantinga)
Free will explains human evil — but what about cancer and earthquakes?Going deeper
"Natural evil" is the harder half, and honesty admits it. A few threads help. A stable world running on consistent natural laws — the same physics that lets bones heal lets them break, the same tectonics that recycles nutrients causes earthquakes — may be the only kind of world in which free creatures can act and learn at all; a reality that magically softened every consequence would be a dream, not a world. Scripture also frames creation itself as "subjected to futility," groaning and awaiting liberation (Rom 8:20-22) — the natural order is not yet what it will be. But Christianity's real consolation here isn't a mechanism; it's a Person. We don't worship a God who explains your diagnosis from the clouds. We worship one who wept at a graveside (John 11:35) and went to a cross — who meets you inside the suffering, and promises to redeem even this.
Romans 8:20-23; John 11:32-36; Revelation 21:4
Where it appears
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Resources, by level
Lay
- ★ Start hereBookWalking with God through Pain and SufferingTimothy Keller · ~370 pp · Paid · evangelical
The most pastorally and philosophically complete book on suffering in print — equally at home with the arguments and with the broken heart.
The single best modern book for the thoughtful doubter: it takes the strongest objections seriously, then makes the positive case with unusual warmth and intellectual care.
Lewis's classic intellectual treatment of why a good and powerful God allows pain — clear, humane, and quotable.
Strobel takes the eight hardest objections to Christianity — including evil, suffering, and hell — straight to leading thinkers. A doubter's companion volume.
Pastoral
William Lane Craig's site — rigorous, free articles, debates, and Q&A on the existence of God, the problem of evil, and the resurrection. For those who want the arguments at full strength.