(Marcion) Gnostic born in Sinope, Pontus. Believed that the God of the O.T. was different from the God of the N.T. Taught that Jesus wasn't born of a woman. Excommunicated in A.D. 144, and refuted theologically by Justin Martyr and Tertullian. This was the first great threat to the early church.

A Christian heresy of the second and third centuries A.D. that rejected the Old Testament and denied the incarnation of God in Jesus as a human.

the Christian heresy of the 2nd and 3rd centuries that rejected the Old Testament and denied the incornation of God in Jesusas a human