Meaning

noun knowledge of the future (usually said to be obtained from a divine source)

noun a prediction uttered under divine inspiration

originFrom Middle English prophecie, from Old French prophetie, from Latin prophētīa, from Ancient Greek προφητεία (prophēteía, “prophecy”), from προφήτης (prophḗtēs, “speaker of a god”), from πρό (pró, “before”) + φημί (phēmí, “to tell”). Displaced native Old English wītgung. Doublet of prophesy.

Etymology from Wiktionary, CC BY-SA 3.0