Mammon n.

personification of riches and worldliness, mid-14c., from Late Latin mammona, from Ecclesiastical Greek mamōnas, from Aramaic mamona, mamon "riches, gain;" a word left untranslated in Greek New Testament (Matthew vi.24, Luke xvi.9-13), retained in the Vulgate, and regarded mistakenly by medieval Christians as the name of a demon who leads men to covetousness.