The Jews are God's people, and will always stay that. They are the chosen people.
The Jews had a choice when Christ came, all prophecies clearly fullfilled, yet they rejected him. We don't need to go to the jews, for in the endtimes 144,000 jews will come to faith of the Lord and testify of his deeds.
The people of God will stay the people of God, no matter how hard they keep rejecting him(hehe, read the old testament...)
Michael