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Bible Gateway passage: Romans 11 - New American Standard Bible 1995
When it says here that God has not rejected his people, he is speaking of his people whom he foreknew. And what does that mean? It means that God foreknew who would believe in him, who would deny self, die to sin, and follow him in obedience to his commands. And those whom he foreknew he also predestined to be conformed to the likeness of his Son Jesus Christ. He chose us in him before the foundation of the world, that we should be holy and blameless before him (see Romans 8:29; Ephesians 1:3-4).
God has kept for himself a particular number of people who have not, or who will not bow to a false god but will honor Christ as Lord. There is a remnant, chosen by God, whom he foreknew, who have submitted to or who will yet submit to the will of God, who will surrender their lives to Jesus Christ, and who will die to sin and obey God and his commandments, in the power of God, by the grace of God, and not of their own fleshly works. And when it says that “all Israel will be saved,” it is speaking of biblical Israel.
And biblical Israel is comprised of all who have surrendered their lives to Jesus Christ, who have made him master of their lives, who have been crucified with Christ in death to sin and raised with Christ to walk in newness of life in him, no longer to live as slaves to sin, but as slaves to God and to his righteousness. All Jews who rejected Jesus Christ as their Lord and Savior, if they were ever part of Israel, have been cut out of Israel. And all repentant Gentile believers in Christ have been grafted into biblical Israel.
[Genesis 17:7-9; Genesis 18:19; John 8:18-19,38-47; Romans 2:28-29; Romans 6:1-23; Romans 8:1-14; Romans 9:4-8,25-28; Romans 11:1-36; 1 Corinthians 10:1-22; Galatians 3:16,26-29; Galatians 4:22-31; Ephesians 2:11-22; Ephesians 3:1-6; Hebrews 3:1-19; Hebrews 4:1-16; Hebrews 8:6-13;1 Peter 2:24; 1 John 2:22; Jude 1:5; Revelation 2:9; Revelation 3:9]
Now it says here in Romans 11 that the Jews who were once part of biblical Israel, but who rejected Jesus Christ as their Messiah, the Christ, were cut out of biblical Israel due to their unbelief. Compare this to what it teaches us in 1 Corinthians 10:1-22; Hebrews 3:1-19; and Hebrews 4:1-13. All who reject Jesus Christ as Lord of their lives and who choose their sins over obedience to God, even if they profess faith in Jesus Christ, will die in their sins, and they will not have eternal life with God, because of disobedience.
And when it states here in verse 29 that “the gifts and the calling of God are irrevocable,” we have to consider what those gifts and callings of God are. And we learn in the Scriptures that the faith to believe in Jesus is a gift from God, and salvation from sin and eternal life with God are gifted to us by God, and the repentance and obedience to God, required of God for salvation and for eternal life with God, are also God’s gifts to us. For not one of us can, in our own human effort, ever be acceptable to God, because of our sin.
And we are called of God to belong to Christ, to be his saints, according to his word and to his will and purpose for our lives. He has not called us for impurity, but in holiness. And to be holy is to be different from the world because we are being conformed by God to the likeness of character of Jesus Christ, as we surrender our lives to God and we submit to his will and purpose. And we are called out of lives of living in sin into living for our Lord in walks of surrender and in obedience to his commands, by his grace.