Yah'shua's Rabbi : Paul goes into great detail in Romans 11.You seem painfully ignorant of the WORD of G-d.
shalom b'SHEM Yah'shua HaMashiach
he begins in verse one discussing the question. NAsbU Romans 11:1 I say then,
You might want to ask yourself the question:
God has not rejected His people,
has He? May it never be!
For I too am an Israelite,
a descendant of Abraham,
of the tribe of Benjamin. NAsbU Romans 11:34
Or this famous verse:
For WHO HAS KNOWN THE MIND OF THE LORD,
OR WHO BECAME HIS COUNSELOR? NAU Romans 11:25 For I do not want you, brethren,
Be Blessed than they have stumbled,
to be uninformed of this mystery--
so that you will not be wise in your own estimation--
that a partial hardening has happened to Israel
until the fullness of the Gentiles has come in;
as it is what has allowed the Gentiles
to be grafted into the vine.
However...that part of Israel saved was but a remnant (11:5) as Isaiah had foretold.(9:27).
Whether Jew or Gentile faith in Christ was required before being considered a branch on that tree, Israel. (11:23)
Those of the nations grafted in and that faithful remnant together would form “Israel” that was to be saved. (11:25,26)
But just who is “Israel”? (9:6,7) being born into the fleshly nation of Israel did not make one an “Israelite” in God's sight but being a children of the promise, whether Jew or Greek, made one an “Israelite” by faith and God's choosing. (9:14,15) (10:4)(10:4)
“Israel” would be made up of a remnant of Jews who put faith in Christ and Gentiles sufficient to fill up the number of His nation of kings and priests. (10:11,12)