Marcionism

noun2

1. •
   (historical) 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.

   • Gnosticism and Marcionism offered two possible futures for the Jesus cult. — 2009
2. •
   General rejection of the Old Testament, its God, and its teachings.