Is a "believer" still Jewish?
Is a born-Jewish individual who believes Jesus to be his/her "Lord and Savior" still a part of the Jewish people? A Jew who believes in Jesus as his/her "Lord and Savior" has become a Christian. Even if not a formal member of a church group that person is a Christian theologically. The halacha (B.T. Sanhedrin 44a) recognizes the biologic link to the Jewish people as inviolate, but also recognizes that as long as one remains an apostate one is not considered to be part of the Jewish community.
Zalman Kravitz