Will the whole nation of Israel be born again at Christ's return?
Yes. At Christ's return, all that nation of Israel will be born in a day spiritually. The remnant preserved through the tribulation will see Him coming in glory, believe in a moment, and then the New Covenant becomes reality. God will write His law in their hearts.
Les explains that this is not Israel suddenly deciding to follow God. When Christ returns and sets up His Kingdom, the remnant of Jews He has kept through the tribulation period will see Him coming in the clouds of glory, and they will believe in a moment. Les points to Isaiah 66, where the nation is born in a moment, and says all that nation of Israel will be born in a day spiritually. That remnant is the one Paul deals with in Romans 9, 10, and 11. Then the New Covenant becomes a reality, and God puts His Word and commandments in their hearts.
More Questions
When does the New Covenant become a reality for Israel?
After the nation is born in a day spiritually, the New Covenant will become a reality and God will put His Word and His commandments in their heart.
What does the nation of Israel being born in a day have to do with the remnant in Romans 9–11?
The nation of Israel is going to be born in a day spiritually, and the remnant Paul deals with in Romans 9–11 is connected to that national birth.