What does Paul say about believers' responsibility to help Jewish people?

Les explains that this is exactly what Paul is talking about: even believers today must have a concern for the carnal or fleshly needs of the Jew. That responsibility flies in the face of the anti-Semitism rising again around the world. Les connects it to God’s sovereign care for Israel, who must remain a nation in unbelief in the land so the seven years of tribulation can be consummated and the 144,000—12,000 from each tribe—can fulfill prophecy. He notes Jeremiah 31 says the sun would fall from its place if Israel ceased to be a nation, so God keeps them intact. A young Orthodox Jew told Les that you cannot evangelize all Jews, because then none would be left to fulfill prophecy.