The story
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: The teachings of Marcion of Sinope and his followers, a docetic form of early Christianity often but not universally considered Gnostic that rejected the spiritual authority of the Hebrew Tanakh (Old Testament) and the disciples and apostles other than Paul as serving the Demiurge. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.