A name given to that species of divination that was drawn from the responses of oracles: Theomancy was also a predictions using sibyls and supposed to be immediately inspired by some divinity.

Theomancy involved the mysteries of a divine majesty who sought the sacred names. The possessor of such a "science" knew the future, commanded nature, had full power over angels and demons, and could perform miracles by the answers of divinely inspired oracles.