Also to consider is that it was Paul that was given the revelation to go to the Gentiles and preach the Gospel of Grace that we are saved by Grace Alone through Faith Alone in Christ Alone.
That is incorrect. It was to Peter that the revelation came that grace was open to Gentiles and it was Peter who received the first Gentile, Cornelius into the Church. Acts 10
Peter to his credit recognized his error and recalled the conversion of Cornelius, and other Gentiles, but the revelation was given to Paul.
Acts 9:15 But the Lord said to him, "Go for he is a chosen vessel of Mine to bear My name before Gentiles, kings, and the children of Israel.
Gal. 1:12 For I neither received it from man, nor was I taught it but It came through the revelation of Jesus Christ.
Gal. 2:7 But on the contrary, when they saw that the gospel for the uncircumcised had been committed to me, as the gospel for the circumsized was to Peter.