Library Theodoret Compendium of Heretical Fables
Book 3
On Noetus of Smyrna
Noetus was a Smyrnaean by race, and he renewed the heresy which a certain Epigonus, so called, first brought forth, and which Cleomenes, receiving it, confirmed. These are the chief points of the heresy. They say there is one God and Father, craftsman of all things; invisible whenever he wishes, and appearing whenever he wills; and that the same one is unseen and seen, and begotten and unbegotten—unbegotten from the beginning, but begotten when he wished to be born of a virgin; impassible and immortal, and again passible and mortal. For being impassible, he says, he willingly endured the suffering of the cross. They name this one both Son and Father, called this or that according to the needs. Those who loved this heresy were named Noetians. After Noetus, Callistus championed it, he too inventing certain additions to the impiety of the doctrine.
Greek: Theodoret of Cyrus, Haereticarum fabularum compendium / Αἱρετικῆς κακομυθίας ἐπιτομή (CPG 6223; PG 83, 336–556). English: study translation for BWAB Library—not a modern copyrighted translation. The full five books are hosted here.