I was in conversation with a friend about the problem of evil when gave examples of human evil on innocents that God could have prevented, he said the act is evil on our morality but not on God's morality. He knows omniscience so he the act might not be evil for him for the reasons we don't know. Does this even make sense? When our morality is so different than God, when we say good, the word good could mean very different when applied to God? What would we even mean when God is perfectly good? Any responses to the argument?