In briefly sketching this version of Basilidianism, which most likely rests on later or corrupt accounts, our authorities are fundamentally two, Irenaeus and the lost early treatise of Hippolytus; both having much in common, and both being interwoven together in the report of Epiphanius. The other relics of the Hippolytean Compendium are the accounts of Philaster (32), and the supplement to Tertullian (4).