the spiritual imperative of the virgin birth

[Steven Avery]

Damasus was the Bishop of Rome. Jerome translated the Gospels at his request. There was no central superiority compared to the other locales at that time. That really began to occur more about 60 years later, with Leo. Ambrosiaster was simply giving a Christian commentary on Romans. Not sure why you would emphasize somebody calling him Pelagian.

Your pointing out that Ambrosiaster was well acquainted with Jewish beliefs only bolsters his quote. Yetzar hara is very close to the inherited sin nature, although Jewish writers who are not Messianic prefer today to try to avoid that clear similarity.