Not as cut and dried as you say. In any case, the Bible that most gentile Christians would have knowledge of, and predispose them to the God of the Jews, was the LXX. That the Church was not wedded to the Hebrew tongue is shown by the fact that the whole New Testament was written in Greek, excepting Matthew, and indeed by the fact that Our Lord is known to the world by a Greek name. From the beginning, the Church in Jerusalem was divided between Greek speakers and “Hebrew” speakers.
I do believe I inferred that.
That the Church was not wedded to the Hebrew tongue is shown by the fact that the whole New Testament was written in Greek, excepting Matthew, and indeed by the fact that Our Lord is known to the world by a Greek name.
Lets be factual - the very first Christians were Jews. That the NT was written in Greek (some argue Matthew was originally Hebrew or Aramaic) is founded upon the simple fact that by the time they were written, gentile converts were the predominant group in the Church and Greek was the common, established language across the Mediterranean region. The Church was no longer centered in Israel, but scattered all over the Greek speaking world.
As far as Jesus being known by a greek name, that is not entirely correct. Jesus in the Greek is Iesous (pronounced ee-ay-sooce'), making it an english transliteration of the Greek. The Greek inturn is transliterated from the Hebrew Yeshua - and its use is not uncommon within Christianity either.
Finally, there is good evidence to suggest that Jesus Himself was trilingual - Hebrew, Greek and Aramaic
From the beginning, the Church in Jerusalem was divided between Greek speakers and “Hebrew” speakers.
This conflict had nothing to do with the 'language' the bible was eventually passed down to us in - but carryovers from the Jewish heritage of considering Hellenists as less worthy, which took some time to root out of Christianity.