The Lord’s promise to Abram was not just for him personally. God explicitly said it was for his descendants through Isaac and Jacob, not Ishmael (Genesis 17:18–21). This is very clear in the text. That is why the covenant line runs through Jacob (who is renamed to Israel in Genesis 32:28), not through every physical child of Abraham.

The promise in Jeremiah 31:35–37 couldn’t be anymore clear. As long as the sun, moon, and stars endure, Israel will remain a nation before God. God ties Israel’s continued existence to the fixed order of creation.

This is not based on their current faithfulness or acceptance of the Messiah, it is based on His covenant faithfulness to the patriarchs.

Romans 11 makes the same point. Israel is presently hardened in part, but they are still “beloved for the sake of their forefathers” and “the gifts and calling of God are irrevocable” (Romans 11:28–29). Their present unbelief does not cancel God’s future promises. If it did, God would be breaking His own word, which He cannot do.

Of course rejecting Christ is serious and leads to eternity in hell, whether you’re a Jew or gentle. That is why God calls Israel to repentance and faith in Him. But their unbelief is part of a temporary stage in God’s redemptive plan, not the annulment of His covenant. They (the natural branches) have been temporary grafted out because their unbelief in the messiah and so we gentiles (unnatural branches) could be grafted in But, as Paul makes clear, at the Second Coming “all Israel will be saved” when the Deliverer comes from Zion (Romans 11:26).

So no, this is not about giving “special favor” in terms of salvation to those who hate Christ, it’s about God keeping His oath even when His people are faithless.

If we say He will not keep it, we are not only rewriting prophecy, we are calling His character into question.

Zechariah 13:8–9 gives that picture in detail. “In the whole land, declares the Lord, two thirds shall be cut off and perish, and one third shall be left alive. And I will put this third into the fire, and refine them as one refines silver, and test them as gold is tested. They will call upon My name, and I will answer them. I will say, ‘They are My people’; and they will say, ‘The Lord is my God.’”

This is describing Israel’s future tribulation, when God will purify the nation through intense trial. The result is that one third will repent, believe, and be saved. It is a refining judgment with a redemptive goal, preparing them to welcome the Messiah when He returns.

Also, Zechariah 12:2–3 says:. “Behold, I am about to make Jerusalem a cup of staggering to all the surrounding peoples. The siege of Jerusalem will also be against Judah. On that day I will make Jerusalem a heavy stone for all the peoples. All who lift it will surely hurt themselves. And all the nations of the earth will gather against it.”

In the last days (which we are in) there will be a global hostility toward Israel, a kind of bloodlust that draws nations into conflict against them. This is not random, but a fulfillment of prophecy. People will begin to hate the Jewish people right before the Lord’s return in judgement to personally step in to deliver them, fulfilling His covenant promises.

Satan hates Israel. Always has and always will. Because if he can destroy Israel, he wins, and God loses because God fails to keep his covenant promises.