The gospel is to be made known "to all nations, beginning at Jerusalem" (vs. 47 [of Luke 24:44-49]). That is, in opening the door of faith to the Gentiles, God did not close it on the Jews. We must firmly reject the extraordinary teaching of a "two-track" gospel, which maintains that there is no need for Jews to believe in Jesus because they already have their own covenant with Abraham. But everybody needs to come to Christ!
-John Stott in Through the Bible Through the Year, today's reading a page 277.
Think of the result if both Palestinians and Israelis were to come to Christ.