Marcionite (n.)

1530s, member of an early Christian sect named for the Gnostic Marcion of Sinope (c. 140), who denied any connection between the Old Testament and the New. They contrasted the barbaric and incompetent creator, who favored bandits and killers, with the "higher god" of Christ. They also emphasized virginity and rejection of marriage, and they allowed women to minister. They flourished, especially in the East, until late 4c. The form Marcionist is attested from mid-15c.