Demons

Demons may or may not also be considered to be devils: minions of the Devil.^[1] In many traditions, demons are independent operators, with different demons causing different types of evils (destructive natural phenomena, specific diseases, etc.). In religions featuring a principal Devil (e.g. Satan) locked in an eternal struggle with God, demons are often also thought to be subordinates of the principal Devil. As lesser spirits doing the Devil's work, they have additional duties— causing humans to have sinful thoughts and tempting humans to commit sinful actions.^[4]

Early Christians associated magic with demons, and thus regarded it as against Christian religion.

This concept remained pervasive throughout the Middle Ages, when Christian authors categorised a diverse range of practices—such as enchantment, witchcraft, incantations, divination, necromancy, and astrology—under the label "magic".