Here is a testimony to how quickly God moves when it's time for Him to move. The movement under discussion today is God granting eonian life and immortality to believers at the end of this eon.

Will Israel saints be made immortal just as body of Christ believers will? Yes. Does this include those who survive the Tribulation? Yes, it does. Just as God will change US while we are still alive, He will do the same with the faithful Israel saints who endure to the end of the Tribulation. The major difference, of course, is that Israel saints stay on earth while we will rise to meet the Lord in the air en route to our celestial habitation.