Paul dealt with five groups in those chapters. All in relation to the olive tree, whose root is Abraham, then Isaac, then Jacob, then the twelve tribes of Israel. The five groups were 1)His unbelieving brethren, who were cut off of the olive tree, 2) the remnant, which is what remains of the olive tree in this age, 3)the wild olive branches, Gentiles, grafted into the olive tree, because of the death, burial and resurrection of Messiah. 4) natural branches, cut off for unbelief, that can be grafted back in at anytime, by receiving Messiah, 5) wild branches, that having been grafted in by grace, can be cut off for arrogance, boasting over the natural branches who had been cut off.
Interestingly, in Phil 2 before “every knee shall bow and every tongue confess” there is "Have in you the same attitude which was in Christ Jesus
Who, being in very nature God,
did not consider equality with God something to be used to his own advantage;
7 rather, he made himself nothing
by taking the very nature of a servant,
being made in human likeness.
8 And being found in appearance as a man,
he humbled himself
by becoming obedient to death—
even death on a cross!
Unbelieving Israel stumbled at the stumbling stone, of not “Humbling themselves under the mighty hand of God”- so it follows, “Lo how the mighty have fallen”, because God rules in the council of the mighty ones(Psalm 82). He is teaching us all His judgment(mind/wisom/reason) and that is really the core theme of Romans(imo)
The theology of heaven and hell has so skewed the understanding of salvation that is gets impossibly muddled. Paul wasnt speaking of heaven and hell.
Paul wanted his ethnic and spiritual brothers from the seed of Abraham to enjoy what had been provided for them when Messiah fulfilled all the covenants and sacrifices with His own blood, enabling new and better promises. Thats what saved meant to Paul. It meant deliverance from the fire that will burn up all the wood hay and stubble, as well as all the chaff, as well as the trees which had the axe(prophetic word) laid to their roots. That fire is the light of Day, as in Romans 1 and 2, where Paul is layng the foundation for all of this.He longs for his countrymen to see the glory, and taste it, and avoid being rendered void in their works.
2:16 This will take place on the day when God judges people’s secrets through Jesus Christ, as my gospel declares.
The olive tree is the same as the Vine in John 15. Branches are pruned, branches flourish, branches wither and are cut off, gathered into bundles and burned.
12 If anyone builds on this foundation using gold, silver, costly stones, wood, hay or straw, 13 their work will be shown for what it is, because the Day will bring it to light. It will be revealed with fire, and the fire will test the quality of each person’s work. 14 If what has been built survives, the builder will receive a reward. 15 If it is burned up, the builder will suffer loss but yet will be saved—even though only as one escaping through the flames.
This is not talking about heaven and hell, this fire burns up reward and inheritance. This what happenned(imo) to the branches that were cut-off. The reward of God is participation in His glory. His rejection is “ichabod”, the glory leaving. The glory left the old covenant and passed to the new. The temple was no longer built with stones it was built of people and the bricks wer gathered from natural Israel and among the Gentiles, so, spiritual Israel, the Israel of God is now the ONE NEW MAN, because the barrier has been removed. Everyone building under the old covenant is building, wood hay and stubble.
But this does not mean that the blessings of the branches that were cut-off are totally lost, “because the gifts and callings of God are without repentance” and since “all Israel will be saved”, at some point they will be grafted back in, but for now they are cut-off, enemies for the sake of the gospel, but beloved for the sake of the forefathers. But now, the Israel of God, spiritual Israel, is the One New Man, which is the natural olive tree that extends back to Abraham, and is now composed od natural and wild grafted in branches.
Eph 3:6 This mystery is that through the gospel the Gentiles are heirs together with Israel, members together of one body, and sharers together in the promise in Messiah Jesus.
Some other places where two Israels are detailed by Paul are 2 Cor 3:
13 We are not like Moses, who would put a veil over his face to prevent the Israelites from seeing the end of what was passing away. 14 But their minds were made dull, for to this day the same veil remains when the old covenant is read(unbelieving, old covenant Israel). It has not been removed, because only in Christ is it taken away. 15 Even to this day when Moses is read, a veil covers their hearts. 16 But whenever anyone turns to the Lord, the veil is taken away. 17 Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom. 18 And we all(new covenant Israel), who with unveiled faces contemplate[a] the Lord’s glory, are being transformed into his image with ever-increasing glory, which comes from the Lord, who is the Spirit.
Gal 4:
21 Tell me, you who want to be under the law, are you not aware of what the law says? 22 For it is written that Abraham had two sons, one by the slave woman and the other by the free woman. 23 His son by the slave woman was born according to the flesh, but his son by the free woman was born as the result of a divine promise.
24 These things are being taken figuratively: The women represent two covenants. One covenant is from Mount Sinai and bears children who are to be slaves: This is Hagar. 25 Now Hagar stands for Mount Sinai in Arabia and corresponds to the present city of Jerusalem, because she is in slavery with her children. 26 But the Jerusalem that is above is free, and she is our mother.
Heb 12:
18 You have not come to a mountain that can be touched and that is burning with fire; to darkness, gloom and storm; 19 to a trumpet blast or to such a voice speaking words that those who heard it begged that no further word be spoken to them, 20 because they could not bear what was commanded: “If even an animal touches the mountain, it must be stoned to death.” 21 The sight was so terrifying that Moses said, “I am trembling with fear.”
22 But you have come to Mount Zion, to the city of the living God, the heavenly Jerusalem. You have come to thousands upon thousands of angels in joyful assembly, 23 to the church of the firstborn, whose names are written in heaven. You have come to God, the Judge of all, to the spirits of the righteous made perfect, 24 to Jesus the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel.
Summing up the five groups Paul dealt with in regards to the olive tree- Paul rejoices that eventually “all Israel”, both those who were cut- off and those who stayed in, will be saved, because after all, “God has shut up all in disobedience that He might have mercy on all”- He is way beyond our definitions and categorizations, and He designed everything so that everything that came out of Him(creation), will pass through Him(disruption/reconciliation), and return to Him(restoration/fulness), and glory will abound for all throughout endless ages.
Man the word of God is so yummy