θεωργία, a name which the ancients gave to that sacred part of magic which we sometimes call white magic, or the white art.

The word is formed from θεός, "God," and ἔργον, "work;" q. d. the art of doing divine things, or things which God alone can do: or the power of working extraordinary and supernatural things, by invoking the names: names of God, saints, angels, &c. Accordingly, those who have written of magic in general, divide it into three parts: the first whereof is called theurgy, as operating by divine or celestial means; the second, natural magic, performed by the powers of nature; and the third, comprehending necromancy, sorcery, and witchcraft or magic, performed by the assistance of demons or departed men. See MAGIC.