I would urge you to read it again. When is “the blindness”removed from Jacob=Israel?No, that is not what Paul said. Please examine the passage more 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.
Please think about this. How can there be any covenant besides the new covenant that could take away sins? Christ's blood established the new covenant and you agree with that. What other covenant can take away sins? Surely, no other covenant can! So, Romans 11:26-27 must be referring to the new covenant. It has to be. To think that any other covenant can take away sins would be an insult to what Christ accomplished on the cross.
So, what Paul was saying in verses 26 and 27 was not that all Israel would be saved by the covenant prophesied in Isaiah 59:20-21 at some point in the future. No, that can't be because it's the new covenant that was established by Christ already long ago. Instead, what Paul was saying in Romans 11:26-27 was a summary of everything he had been saying going back to Romans 9:1. I will explain that. Remember, the original manuscripts had no chapters and verses, so Paul gave one narrative from about Romans 9:1 to Romans 11:32.
Here is what Paul had said in Romans 9:
Romans 9:6 It is not as though God’s word had failed. For not all who are descended from Israel are Israel. 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.
I have color codes here the difference between two Israels that Paul referenced in this passage. One is national Israel and one is spiritual Israel with national Israel being in blue and spiritual Israel in red. National Israel consists of Abraham's natural, physical descendants while Spiritual Israel consists of Abraham's spiritual descendants which are "God children" who are "the children of the promise". And their offspring are reckoned through Isaac.
In other scripture Paul explains who are "God's children" which are "the children of the promise" who are reckoned through Isaac and the spiritual children of Abraham.
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.
Galatians 4:28 Now you, brothers and sisters, like Isaac, are children of promise.
Okay, now that we have established which Israel it is of which all are saved (Spiritual Israel rather than national Israel), let's go back to Romans 11.
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.
As I was saying earlier, in verses 26 and 27 here Paul was summarizing everything he had been saying going back to Romans 9 by saying how all Spiritual Israel becomes saved and it is by way of The Deliverer coming from Zion and turning godlessness away from Jacob by way of fulfilling a covenant by which He would take away their sins. The way in which Spiritual Israel is saved is the same way that Paul described people being saved earlier in Romans 11.
Romans 11:11 I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy. 12 Now if the fall of them be the riches of the world, and the diminishing of them the riches of the Gentiles; how much more their fulness? 13 For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify mine office: 14 If by any means I may provoke to emulation them which are my flesh, and might save some of them.
So, God put in place a process by which salvation would occur for the Israelites and for Gentiles. He had an elect remnant of Israelite believers, but "the rest were blinded" (Romans 11:5-7). But, Paul clarified that though some were blinded, they had only temporarily stumbled and did not fall and he said "God forbid" that they had completely fallen. Paul proved that they had only stumbled and did not fall by the fact that he hoped to help save some of those who were blinded in his day and the way he would do it is by provoking them to jealousy by leading Gentiles to salvation. This process has continued ever since and will continue until the fulness of the Gentiles has come in. At that point, all Spiritual Israel, consisting of believing Jews and Gentiles, will be saved as Jesus will come at that point and usher in eternity.
So, going back to Romans 11:26-27, has the Deliverer not yet come to turn godlessness away from Jacob by way of a covenant by which sins are taken away? No, He already came long ago to establish the new covenant that takes away sins and turns godlessness away from Jacob.
Acts 3:24 Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days. 25 Ye are the children of the prophets, and of the covenant which God made with our fathers, saying unto Abraham, And in thy seed shall all the kindreds of the earth be blessed. 26 Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
Can you see here that Peter said all the prophets from Samuel, which would include Isaiah, foretold of the days that God would raise up his Son Jesus to bless the people of Israel and turn every one of them away from their iniquities. Now, does this mean every one of them would turn from their sin? No. It means that Jesus would call all of them to repent and offer them the opportunity to be saved from their sins, which He died by dying on the cross and establishing the new covenant by which their sins could be taken away.
I realize I have shared a lot with you here and it's a lot to take in, so I ask that you please consider it prayerfully first before responding.
Notice Israel is blind UNTIL “the fulness of the Gentiles comes in”
Romans 11:25-27
King James Version
25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, UNTIL the fulness of the Gentiles be come in.26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
27 For this is “my covenant”unto them, when I shall take away their sins.”
Paul is pulling that from the prophecy here…
Isaiah 59:20-21
King James Version
20 And the Redeemer shall come to Zion, and unto them that turn from transgression in Jacob, saith the Lord.21 As for me, this is “my covenant” with them, saith the Lord; My spirit that is upon thee, and my words which I have put in thy mouth, shall not depart out of thy mouth, nor out of the mouth of thy seed, nor out of the mouth of thy seed's seed, saith the Lord, from henceforth and for ever.”
This event happens right before the second coming of Christ. This is when God pours out the “Spirit of Grace” on the flesh and blood tribes of Israel.
Zechariah 12:9-10
King James Version
9 And it shall come to pass in that day, that I will seek to destroy all the nations that come against Jerusalem.10 And I will pour upon the house of David, and upon the inhabitants of Jerusalem, “the spirit of grace”and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for his only son, and shall be in bitterness for him, as one that is in bitterness for his firstborn.”
This is when “the tribes of Israel shall mourn”when Christ is revealed in them by the Spirit.
Matthew 24:30
And then shall appear the sign of the Son of man in heaven: and then shall all “the tribes of the earth mourn,”and they shall see the Son of man coming in the clouds of heaven with power and great glory.
This is when the tribes of Israel are “sealed” by the Holy Spirit in Rev. 7:4.