Clement's Notes, c.200 AD, of older material presumably collected c.175 AD.
43 So they say that those on the right knew the names of Jesus and Christ even before the Advent, but they did not know the power of the sign. And when the Spirit gave all power, and the Pleroma united in praise, he is sent forth, “as the angel of the counsel” and becomes the head of the whole after the Father. “For all things were created by him, things visible and invisible, thrones, dominions, kingdoms, divinities, services.” “So God also exalted him and gave him a name which is above every name that every knee should bow and every tongue confess that Jesus Christ, the Saviour, is the Lord of Glory.” “He who ascended also descended. That he ascended, what does it imply but that he descended? He it is who descended into the lower parts of the earth and ascended above the heavens.”
This bit follows Paul very closely, see
Pagels' Gnostic Paul (1975), p.117. if not an interpolation by Clement, we would presume LATE Valentinians he knew in Egypt incorporated Paul, or -less likely- Paul's Ephesians 1:10-19 (c.80 AD) and proto-Valentinians drew from an identical source (c.70 AD). Doesnt it seem too close to Paul, though? Theudas?
The text is a hodge-podge, but note Valentinians, left-right in §37 "
According to the Valentinians, of those who proceeded from Adam, the righteous, making their way through created things, were held in Space, but the others are held among
those who are on the left, in the place created for darkness, and feel the fire."
On the danger of interpolation,
Encyclopedia Britannica says:
Excerpta ex Theodoto (“Extracts from Theodotus”), actually a scrapbook that the 2nd–3rd-century Christian philosophical theologian Clement of Alexandria appended to his Stromata (“Miscellanies”). Certain passages integrate the comments of Clement; thus, the unsystematic arrangement of the material causes problems of interpretation.
What is a recent, recommended scholarly re-arrangement of Ex Theodoto?