the sin of buying or selling ecclesiastical preferments, benefices, etc.
Origin: 1175–1225; Middle English simonie < Late Latin simōnia; so called from Simon Magus, who tried to purchase apostolic powers; see Simon(def. 5),-y3
Christianity the practice, now usually regarded as a sin, of buying or selling spiritual or Church benefits such as pardons, relics, etc, or preferments
[C13: from Old French simonie, from Late Latin sīmōnia, from the name of Simon Magus]
early 13c., "the buying or selling of sacred things," from O.Fr. simonie, from L.L. simonia, from Simon Magus, the Samaritan magician who was rebuked by Peter when he tried to buy the power of confering the Holy Spirit (Acts viii:18-20).