The Jews need to hear and to believe the same gospel that we believe in order to be saved. “For I am not ashamed of the Gospel of Christ: for it is the power of God unto salvation to everyone that believeth: to the Jew first, and also to the Greek (Romans 1:16).” Percentage wise, there are probably more Jews that have accepted Jesus as their Messiah than there are Gentile believers, but there are still many that are lost and need to hear about Christ.
Article Reference: Who is a Jew?