Q. Is a Gentile still a Gentile after they have been, as a wild olive branch, grafted into a cultivated olive tree? And is a Jew who has accepted Jesus, calling himself a Messianic Jew, is not actually a Jew or Israelite anymore?
A. According to Galatians 3:28 in the Church there is neither Jew nor Greek (Gentile). No matter which we were before becoming born again we are neither afterward. The Church is a completely different race of mankind with a different destiny than either Jews or Gentiles. In Ephes 2:14-16 Paul wrote that God’s purpose in sending His son to die for us was to create one new man out of the two. Since the cross there have been three types of human, Jews, Gentiles, and the Church (1 Cor. 10:32).
For more information on this, read A New Race of Human.