According to early Christian writers like Irenaeus detailing Valentinian systems, the first eight Aeons emerge in a chain of emanation:
1. Bythos (Depth / The Ineffable Father) & Sige (Silence) — The primordial root or Monad and his silent consort.
2. Nous (Mind / Monogenes) & Aletheia (Truth) — Emanated from Depth and Silence.
3. Logos (Word / Sermo) & Zoe (Life / Vita) — Emanated from Mind and Truth.
4. Anthropos (Man) & Ecclesia (Church) — Emanated from Word and Life. Together, these four pairs make up the Ogdoad (the "Eight"), representing the foundational fullness out of which the rest of the 30 Aeons of the Pleroma unfold.
