Documented: the treatise is tractate 5 of Nag Hammadi Codex II, Coptic translation of a Greek original, likely late third century, probably Alexandrian. It compiles the full Sethian system: the pre-existent light, Sophia's unauthorized creation, Yaldabaoth and his archons, the Adam story retold with the serpent as instructor, and an apocalypse ending in the world's dissolution. No author, no community name, a school text.
The treatise's documented move: it cites Isaiah's I am God and there is no other god beside me and comments that by saying this he sinned against all the immortal ones, for if no other god exists, how does he know there is none. The Hebrew Bible's most exclusive claim becomes, in this library, the smoking gun of the creator's blindness.
The reading: On the Origin of the World is less a gospel than a reference work, a gnostic catalogue of error, listing the archons' names, their powers, their fates. Its existence proves the Sethians were not just mystics but scholars of their own counter-cosmos, building a rival reference shelf against Genesis.
If the creator's first commandment is quoted as evidence against him, whose Bible are we reading?