You are not telling me anything I don't know other than I don't know what your point is!
1Co 10:32 Give none offence, neither to the Jews, nor to the Gentiles, nor to the church of God:
Paul is a Jewish convert, part of the church.
The church is made of Jewish and Gentile converts.
Gentiles are simply unsaved pagans.
The Jews were God's elect, now have rejected the Messiah, but will again turn to their Messiah as a nation. God's covenant with them is not fulfilled in the church but is an everlasting covenant to them, and them alone. Thus the Millennial Kingdom.
The "church" is different than Israel, and Paul differentiates them right here, and in many other places.
He prays for them, as a nation to get saved--Israelites who have received the law and the promises of God. This is ethnic Israel that Paul is praying for. It still exists to this day.