In the Pleroma there is nothing and everything: it is not profitable to think about the Pleroma, for to do that would mean one’s dissolution. The CREATED WORLD is not in the Pleroma, but in itself.
This passage from the First Sermon establishes the Pleroma as the paradoxical all-and-nothing whose contemplation threatens the creature with dissolution, setting the foundational ontological distinction between Pleroma and created world.
, The Gnostic Jung and the Seven Sermons to the Dead, 1982thesis