No objection to the Christian faith is more common, or more painful, than this one. If God is all-good and all-powerful, why is there so much evil and suffering? This part matters because the question is rarely only intellectual. Often it is asked through tears. A good answer must be true, and it must be gentle.
Two forms of the question
Philosophers distinguish two forms of the problem. The logical problem says that God and evil cannot both exist: a good God would want to prevent evil, an all-powerful God could, so if evil exists, God does not. The emotional or existential problem is the cry of the sufferer: "Why did God let this happen to me?"
The first needs an argument. The second needs a friend, and a cross.
The logical problem
The logical problem assumes that a good and all-powerful God could have no good reason for allowing evil. But that is a large assumption. If God has a reason we cannot see — even one — the contradiction disappears.
The philosopher Alvin Plantinga set out what he called the free will defence in God, Freedom, and Evil (1974). In brief: a world with creatures who freely choose good is more valuable than a world of robots. But if creatures are truly free, it is up to them, not God, whether they choose good or evil. God could create free creatures, or He could guarantee they never do wrong; He could not do both. So it is possible that God has a good reason for allowing moral evil: the value of real freedom and real love.13
The Fall
Scripture gives the deeper reason. God made the world good. "And God saw every thing that he had made, and, behold, it was very good" (Genesis 1:31). There was no death, no suffering, no sin. Then a real man and a real woman, in a real garden, disobeyed a real command: "But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die" (Genesis 2:17).
Everything changed. God said to Adam, "cursed is the ground for thy sake; in sorrow shalt thou eat of it all the days of thy life; Thorns also and thistles shall it bring forth to thee" (Genesis 3:17-18). Paul explains the whole history of human suffering from that moment: "Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned" (Romans 5:12). Even creation itself was affected: "For the creature was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope" (Romans 8:20).
This is why it matters that Adam and Eve were real and the Fall was a real event. If death and suffering were part of the world from the start, as God's chosen way of making it, then God is the author of the very evils the Bible calls His enemies. But Scripture says the opposite: death is an intruder, the result of sin, "the last enemy that shall be destroyed" (1 Corinthians 15:26). The world is broken because we broke it.
Not every suffering is a punishment
That does not mean every illness or disaster is a punishment for a particular sin. Jesus was asked about a man born blind: "Master, who did sin, this man, or his parents, that he was born blind? Jesus answered, Neither hath this man sinned, nor his parents: but that the works of God should be made manifest in him" (John 9:2-3). When a tower fell and killed eighteen people, He said, "think ye that they were sinners above all men that dwelt in Jerusalem? I tell you, Nay: but, except ye repent, ye shall all likewise perish" (Luke 13:4-5).
Suffering in a fallen world falls on the good and the bad alike. The right response is not to search for someone to blame, but to turn to God.
God brings good out of evil
Scripture also shows that God can take what evil men intend and turn it to good. Joseph's brothers sold him into slavery; years later he said to them, "ye thought evil against me; but God meant it unto good, to bring to pass, as it is this day, to save much people alive" (Genesis 50:20). Paul writes, "And we know that all things work together for good to them that love God, to them who are the called according to his purpose" (Romans 8:28). That is not a promise that everything is good. It is a promise that nothing is wasted.
Lewis, in The Problem of Pain, wrote that pain can be the thing that wakes us from our self-sufficiency: "God whispers to us in our pleasures, speaks in our conscience, but shouts in our pains: it is His megaphone to rouse a deaf world."14
The cross is God's answer
The most important thing a Christian can say about suffering is not an argument at all. It is that God has not stood at a distance from it. He entered it. The Messiah is "a man of sorrows, and acquainted with grief" (Isaiah 53:3). At the grave of His friend, "Jesus wept" (John 11:35). On the cross He bore not only pain but sin, and the wrath that sin deserves.
Every other answer to suffering leaves God above it. The gospel says God took it into Himself. "For we have not an high priest which cannot be touched with the feeling of our infirmities" (Hebrews 4:15). And He promises to end it: "And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away" (Revelation 21:4).
Job: when there is no answer yet
Sometimes we do not know why. The book of Job is the Bible's long honest look at that. Job lost everything and said, "the LORD gave, and the LORD hath taken away; blessed be the name of the LORD" (Job 1:21). Later he argued with God and demanded an answer. When God finally spoke, He did not explain Job's suffering. He showed Job Himself: "Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding" (Job 38:4). And Job said, "I have heard of thee by the hearing of the ear: but now mine eye seeth thee" (Job 42:5).
When you sit with a friend who is suffering, you do not need to have the answer. Job's friends did best when they sat with him in silence for seven days, and worst when they began to explain. "The LORD is nigh unto them that are of a broken heart; and saveth such as be of a contrite spirit" (Psalm 34:18).
The hardest question: hell
There is a sharper form of the problem of evil, and honest Christians must face it. "How can a loving God send anyone to hell?" Many modern Christians have tried to answer by softening the doctrine — by making hell short, or symbolic, or empty. This paper will not do that, because the Lord Jesus did not.
Jesus spoke of hell more than anyone else in the Bible. "And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell" (Matthew 10:28). He spoke of "the fire that never shall be quenched: Where their worm dieth not, and the fire is not quenched" (Mark 9:43-44). He described a rich man "in hell" who "lift up his eyes, being in torments" (Luke 16:23). And He set the two destinies side by side in a single sentence: "And these shall go away into everlasting punishment: but the righteous into life eternal" (Matthew 25:46).
Some have argued that hell means simply ceasing to exist. But the same word "everlasting" describes both the punishment and the life in that verse, and Revelation speaks of torment "for ever and ever" (Revelation 20:10). The texts will not bear the softer reading.
Why hell is just
How can this be just? The answer begins with God's holiness and the seriousness of sin. We measure the gravity of a crime partly by the dignity of the one wronged. To strike a man is serious; to strike the King is treason. Sin is rebellion against the infinitely holy God who made us and gives us every breath. "For all have sinned, and come short of the glory of God" (Romans 3:23). And sin is paid in kind: "For the wages of sin is death" (Romans 6:23).
Hell is not a place where God loses control, or where He takes pleasure in suffering. It is the place where His justice is fully done. Paul writes that the impenitent heart "treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God; Who will render to every man according to his deeds" (Romans 2:5-6). Abraham asked, "Shall not the Judge of all the earth do right?" (Genesis 18:25). On the last day, no one will be able to say that God was unfair.
And God does not want anyone there. "As I live, saith the Lord GOD, I have no pleasure in the death of the wicked; but that the wicked turn from his way and live: turn ye, turn ye from your evil ways; for why will ye die, O house of Israel?" (Ezekiel 33:11). Peter says the same: "The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance" (2 Peter 3:9).
The real question is not how God could send anyone to hell. It is how a holy God could forgive anyone at all. The answer is the cross. There God set forth His Son "to be a propitiation through faith in his blood, to declare his righteousness... that he might be just, and the justifier of him which believeth in Jesus" (Romans 3:25-26). Hell shows what sin deserves. The cross shows what love paid so that we need not go there. A Christian who softens hell has also, without meaning to, made the cross small.