Zola Levitt is a messianic Jew who has an informative web site. He has made many videos about Christians and Jews -- one of his points is that God has not finished his work with the Jewish nation. It is God's desire to save all who will accept Jesus Christ as their personal Saviour -- and in the end times many Jews will be saved.
From the time of the return of the first remnant after the Babylonian exile, sacred historians, prophets, apostles, and the Lord Himself, regarded the "Jews" whether in the land or in "Dispersion" as representatives of "all Israel," and the only people in line of the covenants and the promises which God made with the fathers...
are overreaching and simply do not hold water. His Biblical citations in defense of those and other positions are quite challengeable.