Isa 65:1 I am sought of them that asked not for me; I am found of them that sought me not: I said, Behold me, behold me, unto a nation that was not called by my name.
Isa 65:2 I have spread out my hands all the day unto a rebellious people, which walketh in a way that was not good, after their own thoughts;
Isa 65:3 A people that provoketh me to anger continually to my face; that sacrificeth in gardens, and burneth incense upon altars of brick;
Isa 65:4 Which remain among the graves, and lodge in the monuments, which eat swine's flesh, and broth of abominable things is in their vessels;
Isa 65:5 Which say, Stand by thyself, come not near to me; for I am holier than thou. These are a smoke in my nose, a fire that burneth all the day.
Isa 65:6 Behold, it is written before me: I will not keep silence, but will recompense, even recompense into their bosom,
Isa 65:7 Your iniquities, and the iniquities of your fathers together, saith the LORD, which have burned incense upon the mountains, and blasphemed me upon the hills: therefore will I measure their former work into their bosom.
All of the above is about Jews who don't love God, don't keep his commandments and don't keep his covenant.... these are not God's elect.
Isa 65:8 Thus saith the LORD, As the new wine is found in the cluster, and one saith, Destroy it not; for a blessing is in it: so will I do for my servants' sakes, that I may not destroy them all.
This is the handful of Jews that are a blessing. Even though God is going to destroy the cluster, he is't going to destroy them. These are the Jews that love God, keep his commandments and keep his covenant.
Isa 65:9 And I will bring forth a seed out of Jacob, and out of Judah an inheritor of my mountains: and mine elect shall inherit it, and my servants shall dwell there.
Jesus inherits the kingdom of God from the Jews who don't love God, don't keep his commandments and don't keep his covenant and gives that kingdom to the good Jews who love God, keep his commandments and keep his covenant.