What history books have you been reading? There have been Jews living in that region since the time of Christ. There are still more Jews living in US than Israel. And it doesn't look to change in the near future.
until the last Gentile be come in in ...then....
Then what? The judgment. There will be no second chance. Unless a Jew comes to Christ in this age he will be eternally lost. Today is the day of salvation. Anyone who says differently is playing with folks' immortal souls.