Darling all magic means is supernatural power. Miracles are magic, prayers are magic. Instead of a spell say a prayer. Magic comes from God. Black magic is anything that is done in the name of possessing supernatural power that does not come from God. Anything that doesn't come from God is wicked and evil. The Believers are the Holy Magicians. In this life you choose who you ally yourself with whether it's good or evil. You can't be both good and evil it just doesn't work that way.