section_path: Jewish identity/Who is a Jew?
section_name: Who is a Jew?
paragraph_text: Who is a Jew?
  
  According to Rabbinic Judaism, a Jew is anyone who was either born of a Jewish mother or who converted to Judaism in accordance with halakha. Reconstructionist Judaism and the larger denominations of worldwide Progressive Judaism (also known as Liberal or Reform Judaism) accept the child as Jewish if one of the parents is Jewish, if the parents raise the child with a Jewish identity, but not the smaller regional branches. All mainstream forms of Judaism today are open to sincere converts, although conversion has traditionally been discouraged since the time of the Talmud. The conversion process is evaluated by an authority, and the convert is examined on his or her sincerity and knowledge. Converts are called "ben Abraham" or "bat Abraham", (son or daughter of Abraham). Conversions have on occasion been overturned. In 2008, Israel's highest religious court invalidated the conversion of 40,000 Jews, mostly from Russian immigrant families, even though they had been approved by an Orthodox rabbi.
  
  Rabbinical Judaism maintains that a Jew, whether by birth or conversion, is a Jew forever. Thus a Jew who claims to be an atheist or converts to another religion is still considered by traditional Judaism to be Jewish. According to some sources, the Reform movement has maintained that a Jew who has converted to another religion is no longer a Jew, and the Israeli Government has also taken that stance after Supreme Court cases and statutes. However, the Reform movement has indicated that this is not so cut and dried, and different situations call for consideration and differing actions. For example, Jews who have converted under duress may be permitted to return to Judaism "without any action on their part but their desire to rejoin the Jewish community" and "A proselyte who has become an apostate remains, nevertheless, a Jew".
  
  Karaite Judaism believes that Jewish identity can only be transmitted by patrilineal descent. Although a minority of modern Karaites believe that Jewish identity requires that both parents be Jewish, and not only the father. They argue that only patrilineal descent can transmit Jewish identity on the grounds that all descent in the Torah went according to the male line.
  
  The question of what determines Jewish identity in the State of Israel was given new impetus when, in the 1950s, David Ben-Gurion requested opinions on mihu Yehudi ("Who is a Jew") from Jewish religious authorities and intellectuals worldwide in order to settle citizenship questions. This is still not settled, and occasionally resurfaces in Israeli politics.
  
  Historical definitions of Jewish identity have traditionally been based on halakhic definitions of matrilineal descent, and halakhic conversions. Historical definitions of who is a Jew date back to the codification of the Oral Torah into the Babylonian Talmud, around 200 CE. Interpretations of sections of the Tanakh, such as Deuteronomy 7:1–5, by Jewish sages, are used as a warning against intermarriage between Jews and Canaanites because " will cause your child to turn away from Me and they will worship the gods (i.e., idols) of others." Leviticus 24 says that the son in a marriage between a Hebrew woman and an Egyptian man is "of the community of Israel." This is complemented by Ezra 10, where Israelites returning from Babylon vow to put aside their gentile wives and their children. A popular theory is that the rape of Jewish women in captivity brought about the law of Jewish identity being inherited through the maternal line, although scholars challenge this theory citing the Talmudic establishment of the law from the pre-exile period. Since the anti-religious Haskalah movement of the late 18th and 19th centuries, halakhic interpretations of Jewish identity have been challenged.