I Will Call Them My People Which Were Not My People

"I Will Call Them My People Which Were Not My People" Romans 9:25, Paul the apostle quoting the book of Isaiah referring to the Israelites, the disobedient and gainsaying people, but also an allusion to you and I.
Unlike Israel, gentiles could never make the claim that we were ever Gods people. If we were brought not nigh by the blood of Christ, we too should have been 'like unto Sodoma and made like unto Gomorrah'.
But we were brought nigh, we were not the people of God, but faith in Christ turned us about. So too will it be for Israel, a remnant indeed shall be saved.

Blood of Christ,Romans 9:25,I will call them my people which were not my people.,