History of Christianity
Christianity kept many practices from Jewish tradition. Christianity thought the Jewish scriptures to be sacred and used mostly the Septuagint translation of the Torah (the first five books of the Old Testament), the Hebrew Prophets and Writings (the rest of the Old Testament books), and added other texts as the New Testament.  Christians professed Jesus to be the God of Israel, having taken human form, and considered Jesus to be the Messiah  (Christ) who had been prophesied about in the Old Testament and so was expected by the people of Israel.