The Election of Grace Rom. 11:5 are the True Jews: The Church Christ gave His Life for Eph. 5:25!
Human ethnicity is not the criteria which determines whom God Saves.
The True Jews Rom. 2:29 are the only Israel that was Promised Salvation Is. 45:17: jews and Gentiles from all the nations of the earth Rev. 5:9; 14:6; Chosen in union with Christ before the foundation of the world Eph. 1:4-5; 2 Tim. 1:9; John 17:2.
The same are the Seed of Abraham Christ took upon Himself to die for Heb. 2:16; Gal. 3:16.
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Your book learning is a real barrier
You read one verse of Paul from romans and then run to your commentary and read a chapter to spin out a doctrine for you
The verse is
even so at this PRESENT time also there is a remnant according to the election of grace
and if by grace then it is no longer of works [you fallen into the works trap, because you say the Jews are cut off for disobedience, very Arminian]
otherwise grace is no more grace. But if it be of works then it is no more grace, otherwise work is no more works.
7.What then? Israel has not obtained that which he seeketh but election hath obtained it
AND THE REST WERE BLINDED.
Come along Nanja, let Tots take you by the hand to read Pauls summing up in verse 25.
For I would not brethren that Nanjalita should be ignorant of this mystery, lest she be wise in her own conceits
BLINDNESS in part has happened to Israel until the fullness of the Gentiles be come in
And so ALL ISRAEL will be saved