This book offers a new understanding of Sethianism and the origins of Gnosticism by examining the mythology in and social reality behind a group of texts to which certain leaders of the early church occasionally attached the label 'Ophite.' In the unique Ophite mythology, which rewrites the Genesis paradise story and is attested, for example, in Irenaeus' Adversus haereses 1.30, The Apocryphon of John and On the Origin of the World, the snake's advice to eat of the tree of knowledge is considered positive, the creator and his angels are turned into demonic beasts and the...