Marcion was the 'genius' Esau who separated off the OT from the New, that was his idea, later adopted by the same fools who called him a heretic. But his reasoning for doing it is documented, for he hated the OT and he wanted to distinguish it it from the NT...all this based upon his hatred of God of the OT and his wrong viewing of God as an evil deimurge; he as was Augustine and Aquinas was gnostic, knowing or unknowingly is not the point.
I did not praise Marcion; I merely mentioned his contribution towards establishing NT canon
As you know from the courses you teach, Aquinas (d.1275) was a 13th century person having no contact with Augustine, except through his books. But if you look at Augustine's many works, you will find that it is a mixture of RCC ideas as well as protestant thoughts. I fail to get your connection, but you are correct about his heresies
AgreedAnyway, nothing introduced by Marcion can be trusted.
The 400 years of silence between the prophets Malachi and John the Baptizer is a most natural breaking point for division between the CovenantsEven the division of scripture into 'old' and 'new' is a very tricky devious thing which has had consequences and is not merely a convenience for reading.