Here is the yes or no question
The Mystery of the Church Age
So you do not regard the Body of Christ as separate from the nation Israel?
I see. Yes, I think that only part of national Israel is part of the Body of Christ. The Body of Christ is, by definition, an international body of Christians consisting of believers in every nation, including Israel. So the body of believers in Israel would qualify as being part of the Body of Christ.
I think there is confusion sometimes when we here that God called the whole nation, or when we hear that the whole nation will get saved. There is a basic confusion between two distinct definitions of "salvation."
Salvation is a term that encompasses both material and spiritual salvation. In reconstituting the whole nation of Israel from annihilation or from division, we have material salvation.
Inasmuch as God requires spiritual salvation, as well, Israel's full national restoration will include spiritual salvation, consisting of believers who have accepted Christ as their Savior.
The whole nation, also, will adopt a Christian Constitution. And this will ensure that the nation no longer comes under a curse for idolatry, or for apostasy. Conformity to the laws of God will keep the entire nation in conformity with God's new covenant of Christianity, and will ensure peace and security from that time on. This will, I believe, take place in the Millennial Age, when Satan is bound, and after Antichrist is defeated.
But the most important element in all this is spiritual salvation, without which nobody will have eternal life. God has promised that the nation would come to a place where it would never fall again, and that will take place in the Millennium. But it is even more important tjat individuals receive Christ for eternal life--not just accept a Christian Constitution for their nation.
When God called the whole nation of Israel, He put the whole nation under His covenant, under His laws, and under His governance. But God was under no illusion that every individual would embrace Him for personal salvation, nor did He harbor any illusion that the nation would continue faithful under the covenant of Law forever.
And so, God always planned to deal with Israel as a nation, but would use the Law as a temporary covenant to show the need for individual salvation through Christ.
Still, God never abandoned His promise to restore the nation, because in saving individuals, and in wanting to bless them, He can only fully bless them if the community as a whole is blessed. Thus, God saves societies and nations, if only in the ages of mortality. And I believe He will do this because He has promised to do it.