Sethianism

The Sethians (Greek: Σηθιανοί) were one of the main currents of Gnosticism during the 2nd and 3rd century AD, along with Valentinianism and Basilideanism. According to John D. Turner, it originated in the 2nd century AD as a fusion of two distinct Hellenistic Judaic philosophies and was influenced by Christianity and Middle Platonism. However, the exact origin of Sethianism is not properly understood.