When Paul says "our fathers passed through the sea" to me, he is drawing from his own Hebrew roots, not theirs.
You are mistaken. Paul is drawing from THEIR Hebrew roots as well as his own. In 2 Corinthians 3 Paul told them that he was the administrator of the new covenant "not according to the letter." He said that the Corinthians were being changed from the image of Moses to the image of Christ . Moses represented the letter of the law with all its ceremonial mandates. Genetic gentiles were NEVER under Moses so it would have made no sense to them for Paul to say that they were being changed from the image of Moses to the image of Christ. Therefore, these "gentiles" were of the Diaspora. They were Israelites.
Paul was speaking to the Diaspora in Galatians 4. He said that when they were "under the law" before Christ came. The "law" in the context is the ceremoial
law (i.e., circumcision). Genetic gentiles were NEVER under the the ceremonial law. Therefore, the "gentiles" in Galatians were the Diaspora.
Again in Ephesians 2 Paul was speaking to the Diaspora. They were the "gentiles" for whom Paul became a prisoner (3:1). In 2:17 it says that Christ "came and preached" to them. Christ was sent ONLY to the lost sheep of the house of Israel
that the "gentiles" in Acts 13 were genetic gentiles because Paul said, "We go to the gentiles." Then why did Paul go only to the Jewish synagogues where the common Israelites
went to hear the reading of the law? The word "gentiles" in Acts 13 is a distinction of class
and not of race. The term "gentiles" in Acts 13 distinguished the common Israelite from the Jewish leadership.
Paul forsook giving the gospel to the Jewish leadership and went to the synagogues to give it to the common Jew (gentile). He did NOT seek out genetic gentiles. He was taken BY FORCE to them at the Areopagus and he spoke to them while being transported a prisoner.
He was a prisoner for preaching to Israelites (the Diaspora, compare Acts 26-28 with Ephesians 3:1).
Finally, John saw the Bride of Christ depicted as the New Jerusalem and was told that the names of twelve apostles were written on the foundation and the names of the twelve tribes of Israel were written on the gates (Rev. 21). The names of genetic gentiles are NOT written on the bride of Christ!
Please address the issues below:
1. Show where Paul addressed genetic gentiles in his two epistles to the Corinthians.
2. Show how genetic gentiles were in the image of Moses (2 Cor 3)
3. Show where genetic gentiles were under the ceremonial law before Christ came (Gal. 4)
4. Show where Paul sought out genetic gentiles with the gospel after he forsook giving the gospel to the Jewish leadership (Acts 13, ff).
5. Show where the names of genetic gentiles are written on the Bride of Christ (Rev. 21).