>>>Israel will finally fulfill the destiny long given to them by God to evangelize the world.<<<
I believe that has already occurred. That is, Israel has already evangelized the world, beginning about 2000 years ago, with names like Peter, James, Paul, John, and others called from Israel to be the elect (Ephesians 1:4-12.) They are still doing so today through their words.
Philip
Your application is a good one and I think correct as far as it goes, but doesn't explain the sealing (saving) of 12,000 of each of the twelve tribes of Israel. "All Israel" (the remnant) has yet to come to Jesus as their Messiah. They will soon.