I didn't say the blindness was permanent. The scripture says "to this day" (which Paul wrote at least two decades after the death and resurrection) and that all Israel will be saved when the fullness of the Gentiles comes in. That is about to happen on out generation.
Paul did not say that all Israel would be saved when the fullness of the Gentiles comes in. He said that all Israel would be saved while the fullness of the Gentiles comes in.
Read this passage carefully:
Romans 11:25 I do not want you to be ignorant of this mystery, brothers and sisters, so that you may not be conceited: Israel has experienced a hardening in part until the full number of the Gentiles has come in, 26 and
in this way all Israel will be saved. As it is written: “The deliverer will come from Zion; he will turn godlessness away from Jacob. 27 And this is my covenant with them
when I take away their sins.”
When reading this you should remember that what Paul said in Romans 11 related to what he had been saying in Romans 9 and 10 as well. In Romans 9:6-8 Paul indicated that there is an Israel of which not all of Israel (the nation of Israel) are part.
Romans 9:6 It is not as though God’s word had failed. For
not all who are descended from Israel are Israel.
The first Israel is comprised of those "who are descended from Israel". That's talking about the physical nation of Israel. Not all of those who are part of the physical nation of Israel are part of the other Israel Paul mentioned, which many of us call spiritual Israel.
Paul proceeded to differentiate between physical Israel and spiritual Israel right after that verse.
7
Nor because they are his descendants are they all Abraham’s children. On the contrary, “
It is through Isaac that your offspring will be reckoned.” 8 In other words,
it is not the children by physical descent who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring.
So, what Paul was saying here is that merely being a physical descendant of Israel does not make someone a child of Abraham and of God. Instead, "it is the children of the promise who are regarded as Abraham's offspring". He was referring to the same thing he wrote about here:
Galatians 3:26 So
in Christ Jesus you are all children of God through faith, 27 for all of you who were baptized into Christ have clothed yourselves with Christ. 28
There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for
you are all one in Christ Jesus. 29
If you belong to Christ, then you are Abraham’s seed, and heirs according to the promise.
So, when Paul said in Romans 9:8 that "it is not the children by physical descent who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring", he was saying that it is those who are in Christ Jesus through faith and belong to Christ that are God's children and are children of the promise and Abraham's offspring/seed.
So, this means that the Israel of which not all who physically descend from the nation of Israel are part is spiritual Israel that is made up of those who belong to Christ. So, it is all of spiritual Israel that is being saved and will continue being saved until the fullness of the Gentiles comes in. Paul was not talking about all of the nation of Israel being saved. Why would he say that shortly after saying he hoped SOME of them could be saved (Romans 11:14)? That makes no sense.
Going back to this passage:
Romans 11:26 and
in this way all Israel will be saved.
As it is written: “The deliverer will come from Zion; he will turn godlessness away from Jacob. 27 And this is my covenant with them when I take away their sins.”
Notice here that Paul was referencing an old prophecy and explaining its fulfillment rather than making a new prophecy that would be fulfilled at some point in the future as people like you mistakenly believe. He was referencing the prophecy from Isaiah 59:20-21.
When did the deliverer come from Zion to turn godlessness away from Jacob? Not yet? Not until the future? No, that isn't what scripture teaches. Scripture teaches that He came long ago already from Zion to turn godlessness away from Jacob, as you can see here:
Acts 3:25 And
you are heirs of the prophets and of the covenant God made with your fathers. He said to Abraham, ‘Through your offspring all peoples on earth will be blessed.’ 26
When God raised up his servant, he sent him first to you to bless you by turning each of you from your wicked ways.”
What is the covenant by which God takes away people's sins? The new covenant, of course. Remember, Paul wasn't talking about some future covenant there, he was referencing a covenant written about in an Old Testament prophecy (Isaiah 59:20-21). He was talking about the new covenant there. What other covenant takes away sins besides the new covenant established by the blood of Christ long ago?
Luke 22:20 In the same way, after the supper he took the cup, saying, “
This cup is the new covenant in my blood, which is poured out for you.
Scripture says "all Israel will be saved". So it is referring a remnant, not 15 million, 1/3. It is an event that will occur, a mass amount like what happened at Pentecost. Of course God lifted the veil of Jews one by one for the last 1990 years as they turned to Christ. So when does it happen? When "every eye sees Him coming in the clouds".
That is not what scripture teaches. You're taking everything out of context. When every eye sees Him unbelievers will wail in fear because of the wrath about to come down on them, as portrayed in passages like Revelation 6:12-17.