Many Jews from the Southern Kingdom, whether they came back to Israel or not, retained their identities as being from Israel, children of Jacob, and worshiping God. Many of the children of Jacob from the Northern Kingdom ended up migrating to other parts of the world, assimilated into other cultures, and eventually forgetting about the true and living God. They lost their identities as children of the promises of Abraham, but God knew and knows who they are.
I believe that many who have been brought into the Church are, unbeknown to themselves, actually children of the promise of Abraham, his and Jacob's biological descendants. God has been recovery them, only in a different way, into His Church.
Still the Jews have a special calling as Jews. After the Church is raptured away they will fulfill their destinies as the children of the Abrahamic promise. At the end of time The LORD will gather together all of Israel, some who know that they are of the 12 tribes of Israel, the Jews, and some who don't. The tents of Judah have been being gathered first into Israel and are, according to the Bible, the ruling tribe. After Judah is gathered first, then others will be gathered. Right now it is the the Jews from the Southern Kingdom, also know as the Kingdom of Judah that have been returning to Israel, just as the Bible says.
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Zecharia 12:7 The LORD also shall save the tents of Judah first, that the glory of the house of David and the glory of the inhabitants of Jerusalem do not magnify [themselves] against Judah.
Zec 12:8 In that day shall the LORD defend the inhabitants of Jerusalem; and he that is feeble among them at that day shall be as David; and the house of David [shall be] as God, as the angel of the LORD before them. Zec 12:9 And it shall come to pass in that day, [that] I will seek to destroy all the nations that come against Jerusalem.
Zec 12:10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for [his] only [son], and shall be in bitterness for him, as one that is in bitterness for [his] firstborn.
Zec 12:11 In that day shall there be a great mourning in Jerusalem, as the mourning of Hadadrimmon in the valley of Megiddon.
Zec 12:12 And the land shall mourn, every family apart; the family of the house of David apart, and their wives apart; the family of the house of Nathan apart, and their wives apart;
Zec 12:13 The family of the house of Levi apart, and their wives apart; the family of Shimei apart, and their wives apart;
Zec 12:14 All the families that remain, every family apart, and their wives apart.
“I believe that many who have been brought into the Church are, unbeknown to themselves, actually children of the promise of Abraham, his and Jacob’s biological descendants. God has been recover(ing) them, only in a different way, into His Church.”
Wonderfully correct.