Goetia (Middle Latin, anglicized goety (pronounced /goeti/), from Greek goeteia "sorcery") refers to a practice which includes the invocation of angels or the evocation of demons, and usage of the term in English largely derives from the 17th century grimoire The Lesser Key of Solomon, which features an Ars Goetia as its first section. It contains descriptions of the evocation of seventy-two demons, famously edited by Aleister Crowley in 1904 as The Book of the Goetia of Solomon the King.
Goetic Theurgy, another practice described in the Lesser Key of Solomon, is similar to the book's description of Goetia, but is used to invoke aerial spirits.
Ancient Greek (goeteia) means "charm, jugglery" from "sorcerer, wizard". The meaning of "sorcerer" is attested in a scholion, referring to the Dactyli, stating that according to Pherecydes and Hellanicus, those to the left are goetes, while those to the right are deliverers from sorcery. The word may be ultimately derived from the verb "groan, bewail". Derived terms are "a charm" and "to bewitch, beguile".
Goetia was a term for witchcraft in Hellenistic magic. Latinized goetia via French goetie was adopted into English as goecie, goety in the 16th century.
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Dean Hildebrandt - Essay On Enochiana
Nathaniel Harris - Liber Satangelica
Aleister Crowley - To Man