Yeah israel was blinded but he selected a remnant in order that they would preach the gospel to the world beginning at jeruswlem ( great commission )
“And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; And seeing ye shall see, and shall not perceive: For this people's heart is waxed gross, And their ears are dull of hearing, And their eyes they have closed; Lest at any time they should see with their eyes, And hear with their ears, And should understand with their heart, And should be converted, and I should heal them. But blessed are your eyes, for they see: and your ears, for they hear.”
Matthew 13:14-16 KJV
“I say then, Hath God cast away his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin. God hath not cast away his people which he foreknew.
…. Even so then at this present time also there is a remnant according to the election of grace.”
Romans 11:1-2, 5 KJV
“And he shall be for a sanctuary; but for a stone of stumbling and for a rock of offence to both the houses of Israel, for a gin and for a snare to the inhabitants of Jerusalem. And many among them shall stumble, and fall, and be broken, and be snared, and be taken.
Bind up the testimony, seal the law among my disciples. And I will wait upon the LORD, that hideth his face from the house of Jacob, and I will look for him. Behold, I and the children whom the LORD hath given me are for signs and for wonders in Israel from the LORD of hosts, which dwelleth in mount Zion.”
Isaiah 8:14-18
“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. 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. 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.”
Isaiah 65:7-9 KJV