The problem of evil and suffering is considered by many people to be the strongest argument against the existence of God. The reasoning goes like this: If God exists, He is all-powerful. If He is all-powerful, He is in a position to stop evil and suffering. But we know from experience that evil and suffering go on, scandalously, mercilessly, without even a hint of proportion or justice. Thus there cannot be an omnipotent being capable of preventing all this from happening, because if there were, He surely would. Therefore God does not exist.