When someone states that they do not believe in God because a good God would not allow evil, they make a fatal error in logic. First, the recognition of evil is the recognition that certain actions are "right" and certain actions are "wrong." But how do we determine what actions are morally right and morally wrong? We discern this on the basis of a moral law: a universal sense that certain states of affairs are right and others are wrong. Even most atheists will admit that certain actions are universally wrong and, conversely, universally right.
For example, no one could seriously argue with the statement that it is better to love a child than to torture it. The point is that there is an innate, universal sense of right and wrong within all of us. What is the basis of this moral sense? Some would argue that it is based on cultural customs or traditions. But can this be so?
The famous atheist Bertrand Russell once debated a Christian who asked him if he believed in right and wrong. Russell replied "of course." Then he asked him how he determined what is right and wrong. Russell replied that he determined right and wrong on the basis of his feelings. His opponent replied, "Well, in some cultures they feel it is okay to eat you, and in others they don't. Which do you prefer." The point is that social customs, attitudes, traditions or feelings cannot determine a universal sense of right and wrong.
A universal sense of moral right and wrong can only come from a source outside of ourselves: a transcendent source, a moral Lawgiver. So the recognition of moral law is by default the recognition of a moral Lawgiver. To argue that the existence of evil proves that there is no God is equivalent to stating that the existence of moral law proves that there is no Lawgiver! It's like declaring that the Chrysler automobile that I drive proves without a doubt that there is no Chrysler Motor Company!
Atheists often present the problem of evil to theists as if it is a fatal argument for the existence of God. Nothing could be further from the truth. In reality, it is an absolutely unsolvable problem for the atheist. How does the atheist explain evil-the sense of moral right and wrong-in the absence of a moral Lawgiver? They can't! If there is no moral Lawgiver, then there is no way to explain the sense of moral wrong and moral right we all possess. C.S. Lewis said that evil is God's megaphone to a non-believing world. Evil speaks of moral law. Moral law demands a moral Lawgiver, and it is He that we call God!
