The oracles of God were entrusted to the Jews. Later the Catholic Church added to what they considered scripture to bolster false teaching.
(It's not in the Bible).
Specifically? And by what authority do you make such pronouncements?
You are aware that the Jews only had the prophecies of Jesus and not the teachings themselves.
Those teachings were recorded by the Apostles and Gospel writers, preserved by the Catholic Church, and transmitted both orally and in writing since then.