I am assuming that you mean the Catholic Church since that is the only Church you recognize as "the Church".
Speak to an observant Orthodox Jew and ask him about the Talmud and compare that to the Christian understanding of the OT. Then you will have an idea as to the changes in understanding of what we call the OT Scripture.
I am assuming that you mean the Catholic Church since that is the only Church you recognize as "the Church".
We've been through this before. There is the Catholic Church, which is divided up into various sees. There is no assumption required.