Library Theodoret Compendium of Heretical Fables
Book 2
On Ebion
Of this phalanx Ebion was the leader—and that is how the Hebrews name “the poor.” He said, much as we do, that there is one unbegotten, and showed that he himself is the craftsman of the world; but he said that the Lord Jesus Christ was born of Joseph and Mary, being a man, yet surpassing others in virtue and purity. And they live according to the Mosaic law. They receive only the Gospel according to the Hebrews, and they call the Apostle an apostate. From among them was Symmachus, who translated the Old Scripture from the Hebrew speech into the Greek tongue.
There is another company besides this one, bearing the same name; for these too are called Ebionites. In all other respects they agree with the former, but they say that the Savior and Lord was born of a virgin. They use only the Gospel according to Matthew; and they honor the Sabbath according to the Jews’ law, yet they consecrate the Lord’s Day much as we do.
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.