Was Marcion a Gnostic?

Marcion was indeed a Gnostic because of his belief that the physical body was inherently evil. Therefore, he argued for ascetism and a docetic understanding of Christ. Nevertheless, he never supported the fanciful and mythological perspectives (illusion and enlightenment) of redemption held by other Gnostics (Dowley, 104).

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Dowley, Tim (1995). Introduction to the History of Christianity. Minneapolis: Fortress Press. p. 104. ISBN 978-0-8006-2935-9.