RightReason << I would have to ask, what are you referring to, to say that Saint Augustine did not believe in the doctrine of Transubstantiation as we believe it today. To my knowledge, Transubstantiation refers to the substance being changed into the the literal body and blood of Christ. I think we can substantiate that many of the early Saints or fathers indeed believed this. >>
Well I’m just being as honest as I can. It is true, according to JND Kelly, Schaff, and Darwell Stone, who have gone into all the Eucharist passages of the Fathers in depth that St. Augustine was not as clear on “change of substance.” St. Ambrose (who you quoted) and St. John Chrysostom (who you also quoted) are more clear since they use the best Latin/Greek terms they had (basically meaning “change” or “convert”).
There is the “conversion” view of Ambrose, John Chrysostom, and others in the east, etc and the more “spiritual” view of Augustine. The Fathers used different terms, but I would say with Trent they all believed Jesus was “truly, really, and substantially” present.
The term “transubstantiation” was first used in the Church during the 11th and 12th century “debates” on the Eucharist (Ludwig Ott confirms this, in response to
Berengarius of Tours, etc), and the term was officially adopted at the Fourth Lateran Council in 1215, and then by the Council of Trent as “the most appropriate term” to describe the nature of the change.
Phil P