Saul/Paul was *not* a Jewish rabbi. His teaching was not of Judaism. He was a Hellenist.
Paul’s own words.
Acts 23:
6 But when Paul perceived that the one part were Sadducees, and the other Pharisees, he cried out in the council, Men [and] brethren, I am a Pharisee, the son of a Pharisee: of the hope and resurrection of the dead I am called in question.
Philippians Chapter 3
3 For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
4 Though I might also have confidence in the flesh. If any other man thinketh that he hath whereof he might trust in the flesh, I more:
5 Circumcised the eighth day, of the stock of Israel, [of] the tribe of Benjamin, an Hebrew of the Hebrews; as touching the law, a Pharisee;
6 Concerning zeal, persecuting the church; touching the righteousness which is in the law, blameless.
Oh, I most certainly believe that he said all that. Why do you think that the Jewish people were so mad at him? He was taking their religion in vain. His teachings show that he didn’t have even the most basic understanding of the faith.