Quote Originally Posted by JGIG View Post
Baloney. Paul and the other apostles taught from the OT to prove that Jesus was the promised Messiah.
They used the Greek Septuagint predominately. Additionally, they recognized the Christian writings to be scripture as well.

Peter tells us Paul's letters, for example, were considered scripture:
2 Peter 3:16
He writes the same way in all his letters, speaking in them of these matters. His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do the other Scriptures, to their own destruction.
A misconception that is very common is that the canon of scriptures was closed at the time of Christ and the apostles. That is an unfortunate misunderstanding of the facts. Scripture was never closed for the Jews until the supposed council of Jamnia around 100AD .. and then the Jews argued over that attempt for 500 years and the Ethiopian Jews never accepted it, and still use the Greek Septuagint.