As he saith also in Osee, I will call them my people, which were not my people; and her beloved, which was not beloved And it shall come to pass, that in the place where it was said unto them, Ye are not my people; there shall they be called the children of the living God. Esaias also crieth concerning Israel, Though the number of the children of Israel be as the sand of the sea, a remnant shall be saved: For he will finish the work, and cut it short in righteousness: because a short work will the Lord make upon the earth. And as Esaias said before, Except the Lord of Sabaoth had left us a seed, we had been as Sodoma, and been made like unto Gomorrha. Romans 9:25-29

One of the blessings of the Apostle Paul is him being a well trained Pharisee filled with the Holy Spirit, He can tie together the Old and New Testaments. Paul is going to just quote the prophets of the Old Testament to reveal the New Covenant in Christ. This was not a new idea or religion by the Apostles, this was foretold by God since the foundation of the world, that Jews and Gentiles would become Children of God through The Lord Jesus Christ

The Prophet Hosea states “I will call them My People, who are not My People”  (Hosea 2:23) This is a clear prophecy of the New Covenant in Christ, this is a clear reference to us the Gentile Church. Without Christ we were outside of God, but In Christ we are Children of God (Galatians 3:26) This is what the prophet Hosea states “They will be called Children of the Living God” (Hosea 1:10) Not only are we saved, but we become Children of God through Christ!

Then the Apostle Paul quotes the prophet Isaiah “Though the number of the children of Israel be as the sand of the sea, the remnant will be saved” (Isaiah 10:22-23) This points out a topic we discussed previously about election and salvation. Even though there is an elect of Israel that is as numerous as the sand, only a small remnant will be saved. So again, election doesn’t automatically equal salvation. Even though Israel was elected for a special purpose to bring forth the Messiah Jesus, it doesn’t mean every Jewish person is a Child of God, you must be Born Again in Christ (John 3:3)

Paul quotes the prophet Isaiah by stating “Unless The Lord of Hosts/Almighty has left us a seed, we would have become like Sodom” (Isaiah 1:9) So who is the seed or remnant? Think about the heroes of the Bible (Abraham, Noah, Moses, ect) there has always been a faithful remnant of God, unless we would end like Sodom, a remembrance of total depravity and wickedness. What was the sentence for Sodom and Gomorrah? Total destruction, turn to The Lord Jesus Christ, our only hope, Amen!