BISHOP BARRON St Paul says Justified Gentiles are the Promise

Bishop Barron is a "Roman Catholic" a Gentile - Christian, or Judeo-Christian? St. Paul says Peter was sent to the Jew, while he (Paul) was sent to the Gentiles with the Gospel of Christ which was divinely revealed to him, and is not the gospel of men. So, while the Bible maybe the Holy Book of Judeo-Christians it cannot be the Holy Book of Gentile-Christians because it only contains Gospels of Men, not the Gospel of Christ. That would mean that those who follow Peter (and his successors) need to be a Jew and live under of ALL 600+ laws in the "Old-Testament", and the Curse of the Law that Man is incapable of living up to the Law. At the same time the Successor of Peter's "Canon Law" only applies to the 'Latin Church'. No mention is made of the Roman Catholic Church, yet a baptism certificate from a "Catholic Church" in the United States will evidence that the ceremony was done by the 'Rite of the Roman Catholic Church', making no mention of the Latin Church. What say you, Bishop Barron? Who is the Successor of St. Paul, and where is the Gospel of Christ?