Impressive. Personally, I just read the Bible.
He done is with the earthly Jews of earthly Israel (just as He is done with all of the non-elect), except for those He had chosen individually to be spiritual Jews. God divorced earthly Israel due to their spiritual fornication, and based upon His own laws, He cannot take her back again to be His wife. The elect/saved have become the people of God replacing earthly Israel in that role.
The Jews of His elect, (and as with all others of His elect) will be/must be saved by God, but not because any earthly affiliation.
[1Pe 2:10 KJV]
10 Which in time past [were] not a people, but [are] now the people of God: which had not obtained mercy, but now have obtained mercy.
[Jer 3:8 KJV]
8 And I saw, when for all the causes whereby backsliding Israel committed adultery I had put her away, and given her a bill of divorce; yet her treacherous sister Judah feared not, but went and played the harlot also.
[Deu 24:1-4 KJV]
1 When a man hath taken a wife, and married her, and it come to pass that she find no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give [it] in her hand, and send her out of his house.
2 And when she is departed out of his house, she may go and be another man's [wife].
3 And [if] the latter husband hate her, and write her a bill of divorcement, and giveth [it] in her hand, and sendeth her out of his house; or if the latter husband die, which took her [to be] his wife;
4 Her former husband, which sent her away, may not take her again to be his wife, after that she is defiled; for that [is] abomination before the LORD: and thou shalt not cause the land to sin, which the LORD thy God giveth thee [for] an inheritance.
Afraid not. God is done with Jews of earthly Israel - those who are not of His elect. Many might become saved but not because they are Jews, because they are elect.
First, spiritual "Church" is comprised of all of the saved: Jew and Gentile alike, not just the gentiles.
Second, in the verses below, follow the phrase "new song" - it is the key to understanding who is being represented. Observe that none but the hundred forty-four thousand (those of Rev 7:4-9), could learn, or sing it (it is symbolic of the gospel) - they are representative of all redeemed unto God by Christ - not just Jews - but "out of EVERY KINDRED, AND TONGUE, AND PEOPLE, AND NATION".
Anyway, only the hundred forty-and four thousand alone could lean the new song (Rev 14:3) - they, being depicted as tribes (above) I believe to demonstrate that they have become God's Israel - spiritual Israel. I realize this is kind of confusing, but I will
be happy to try to clarify any questions you may have.
[Rev 5:9,10 KJV]
9 And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation;
10 And hast made us unto our God kings and priests: and we shall reign on the earth.
[Rev 7:4,9 KJV]
4 And I heard the number of them which were sealed: [and there were] sealed an hundred [and] forty [and] four thousand of all the tribes of the children of Israel.
9 After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands;
[Rev 14:3 KJV] 3 And they sung as it were a new song before the throne, and before the four beasts, and the elders: and no man could learn that song but the hundred [and] forty [and] four thousand, which were redeemed from the earth.
Notice that the "servants of our God" (Rev 7:3) of the hundred forty-four thousand of all of the tribes, are the elect - now the people of God 1 Pe 2:10
[Rev 7:3 KJV]
3 Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads.
[1Pe 2:10 KJV]
10 Which in time past [were] not a people, but [are] now the people of God: which had not obtained mercy, but now have obtained mercy.
Bonus verses:
[1Pe 2:16 KJV]
16 As free, and not using [your] liberty for a cloke of maliciousness, but as the servants of God.
[Psa 40:3-4 KJV]
3 And he hath put a new song in my mouth, [even] praise unto our God: many shall see [it], and fear, and shall trust in the LORD.
4 Blessed [is] that man that maketh the LORD his trust, and respecteth not the proud, nor such as turn aside to lies.
[Psa 96:1 KJV]
1 O sing unto the LORD a new song: sing unto the LORD, all the earth.
[Psa 149:1 KJV]
1 Praise ye the LORD. Sing unto the LORD a new song, [and] his praise in the congregation of saints.
[Isa 42:10 KJV]
10 Sing unto the LORD a new song, [and] his praise from the end of the earth, ye that go down to the sea, and all that is therein; the isles, and the inhabitants thereof.