All
Jewish religious movements agree that a person may be a Jew either by birth or through conversion. According to
halakha, a Jew by birth must be born to a Jewish mother.
Halakha states that the acceptance of the principles and practices of Judaism does not make a person a Jew. However, those born Jewish do not lose that status because they cease to be observant Jews, even if they adopt the practices of another religion. Reform and Reconstructionist Judaism, as movements which reject the concept of
halakha, often accept a child as Jewish when only the father is Jewish, provided that the child chooses to identify as Jewish.
Jewish by birth According to
halakha, to determine a person's Jewish status (Hebrew: ) one needs to consider the status of both parents. If both parents are Jewish, their child will also be considered Jewish, and the child takes the standing of the father (e.g., as a
kohen). If either parent is subject to an halakhic breaking status (e.g., is a
mamzer) then the child is also subject to that status. If one of the parents is not Jewish, the rule is that the child takes the standing of the mother (
Kiddushin 68b,
Shulchan Aruch, EH 4:19). The ruling is derived from various sources including , , . The child is also freed from any special status to which the father may have been subject (e.g., being a
mamzer or
kohen) under Jewish law. The
Orthodox and
Conservative branches of Judaism maintain that the halakhic rules (i.e. matrilineal descent) are valid and binding.
Reform and
Liberal Judaism do not accept the halakhic rules as binding, and most branches accept a child of one Jewish parent, whether father or mother, as Jewish if the parents raise the child as a Jew and foster a Jewish identity in the child, noting that "in the Bible the line always followed the father, including the cases of
Joseph and
Moses, who married into non-Israelite priestly families." (However, according to the oral tradition of Orthodox Judaism, the spouses of both Joseph and Moses converted to Judaism prior to marrying them.) The Reform movement's standard states that "for those beyond childhood claiming Jewish identity, other public acts or declarations may be added or substituted after consultation with their rabbi". Advocates of patrilineal descent point to and . This policy is commonly known as
patrilineal descent, though "bilineal" would be more accurate.
Patrilineal descent In 1983, the Reform Central Conference of American Rabbis passed the Resolution on Patrilineal Descent, declaring that "the child of one Jewish parent is under the presumption of Jewish descent. This presumption of the status of the offspring of any mixed marriage is to be established through appropriate and timely public and formal acts of identification with the Jewish faith and people ... Depending on circumstances, mitzvot leading toward a positive and exclusive Jewish identity will include entry into the covenant, acquisition of a Hebrew name, Torah study, Bar/Bat Mitzvah, and Kabbalat Torah (Confirmation). For those beyond childhood claiming Jewish identity, other public acts or declarations may be added or substituted after consultation with their rabbi." Rabbi Mark Washofsky summarizes the 1983 CCAR resolution and subsequent interpretations in Reform responsa literature as follows: • "The resolution is advisory rather than halachic in the traditional sense. It does not establish a new definition of Jewish identity, for its preamble states expressly that it means to be operative only for Reform Jews in North America, not for all Jews everywhere." • "Jewish descent may be from either parent ...The Reform Movement presumes the child of
one Jewish parent, either mother or father, as Jewish. In fact, the 1983 resolution is in one significant respect more stringent than the traditional definition of Jewish status. The child of a Jewish mother and gentile father, whom halachah regards as clearly Jewish, enjoys but a
presumption of Jewish status that must be "established" by "appropriate and timely public and formal acts of identification." • "Biology remains a crucial factor. In the determination of Jewish identity ... the child of
two gentile parents is, as before, definitely a non-Jew and must undergo a formal conversion in order to become a Jew." • "Both descent and behavior are crucial in determining Jewish status under the resolution. The Jewish status of a child of an intermarriage cannot be determined "automatically" either by biology or behavior. Both elements—descent from one Jewish parent
and the performance of mitzvot that lead to a "positive and exclusive Jewish identity—must be present, and they must be present during childhood." • "The resolution applies only to children raised exclusively as Jews ... A child raised simultaneously in Judaism and another religious tradition does not develop a "positive and exclusive" Jewish identity; therefore the presumption of Jewish status is disproved, and the resolution does not apply to that child. He or she will require conversion prior to celebrating becoming bar or bat mitzvah in the synagogue." Waiving the need for formal conversion for anyone with at least one Jewish parent who has made affirmative acts of Jewish identity was a departure from the traditional position requiring formal
conversion to Judaism for children without a
Jewish mother. The CCAR's 1983 resolution has had a mixed reception in Reform Jewish communities outside the United States. The
Israel Movement for Progressive Judaism has rejected patrilineal descent and requires formal conversion for anyone not born of a Jewish mother.
Karaite Judaism believes that Jewish identity can only be transmitted by patrilineal descent, on the grounds that all descent in the Torah went according to the male line, basing this idea "on the fact that, in the Bible,
tribes are given male names and that biblical characters are always referenced by their fathers' names. However, a minority of modern Karaites believe that Jewish identity requires that both parents be Jewish, and not only the father. The divergence of views has become an issue because Orthodox and Conservative communities do not recognize a person as Jewish if only their father is Jewish. and the Rabbinical Assembly of the Conservative movement "agreed that 'sincere Jews by choice' should be warmly welcomed into the community".
Converts to Judaism All mainstream forms of Judaism today are open to sincere converts, with most subgroups having a specific process for accepting converts. Not all conversions are recognised by all varieties of Judaism. In
Rabbinic Judaism, the laws of conversion are based on
the classical sources of Jewish law, especially discussions in the
Talmud, and the law as codified in the
Shulkhan Arukh. This corpus of traditional
Jewish law (halakha) is regarded as authoritative by the
Orthodox and
Conservative movements. The traditional halakhic requirements for conversion are instruction in the commandments,
circumcision (if male), and immersion in
an acceptable body of water before valid witnesses, and acceptance of the commandments before a
rabbinical court. If a male is already circumcised, a drop of blood is drawn from the penis. Orthodox
authorities require that conversions be performed in accord with traditional Jewish law and recognise only those conversions in which a convert accepts and undertakes to observe Jewish law as interpreted by Orthodox
rabbis. Because rabbis in the other movements do not require that converts make this commitment, Orthodox authorities do not generally accept as valid conversions performed outside the Orthodox community. Conservative authorities likewise require that conversions be conducted according to traditional Jewish law. Conducting a conversion absent the traditional requirements of immersion in a
ritual bath and circumcision for males is a violation of a Standard of the
Rabbinical Assembly and grounds for expulsion. Conservative authorities generally recognize any conversion done in accord with the requirements of Jewish law, even if done outside the Conservative movement. Accordingly, Conservative rabbis may accept the validity of some conversions from other non-Orthodox movements. The
Union for Reform Judaism states that "people considering conversion are expected to study Jewish theology, rituals, history, culture and customs, and to begin incorporating Jewish practices into their lives. The length and format of the course of study will vary from rabbi to rabbi and community to community, though most now require a course in basic Judaism and individual study with a rabbi, as well as attendance at services and participation in home practice and synagogue life." Its
Central Conference of American Rabbis recommends that three rabbis be present for the conversion ceremony. The Rabbinical Court of the
Israel Movement for Progressive Judaism requires an average of a year of study to become conversant in Jewish life and tradition. Following this, converts are required to immerse in a ritual bath, be circumcised if male, and accept the commandments before the rabbinical court. Although an infant conversion might be accepted in some circumstances (such as in the case of adopted children or children whose parents convert), children who convert would typically be asked if they want to remain Jewish after reaching religious adulthood – which is 12 years of age for a girl and 13 for a boy, as required by Jewish law.
Karaite Judaism does not accept the oral legal traditions of Rabbinic Judaism. It has different requirements for conversion and refrained from accepting any converts until recently.
Syrian Jewish communities do not normally carry out conversions, particularly where the conversion is suspected of being for the sake of marriage. Nor do they accept such converts from other communities, or the children of mixed marriages or marriages involving such converts.
Jews who have practiced another religion In general,
Orthodox Judaism considers individuals born of Jewish mothers to be Jewish, even if they convert to or are raised in another religion.
Reform Judaism views Jews who convert to or are raised in another religion as non-Jews. For example "... anyone who claims that Jesus is their
savior is no longer a Jew ..." [Contemporary American Reform Responsa, #68]. Historically, a Jew who has been declared to be a
heretic () or Christian (, meaning "Nazarene") may have had a
cherem (similar to
excommunication) placed on him or her; but the practice of communal and religious exclusion does not affect their status of Jewish birth. Judaism also views as Jewish those who involuntarily convert from Judaism to another religion (
Hebrew:
anusim, אנוסים, meaning "forced ones"), and their matrilineal descendants are likewise considered to be Jewish. Judaism has a category for those who are Jewish but who do not practice or who do not accept the tenets of Judaism, whether or not they have converted to another religion. The traditional view regarding these individuals, known as
Meshumadim (), is that they are Jewish; however, there is much debate in the rabbinic literature regarding their status vis-a-vis the application of Jewish law and their participation in Jewish ritual, Another example of the issues involved is the case of converts to Judaism who cease to practice Judaism (whether or not they still regard themselves as Jewish), do not accept or follow halakha, or now adhere to another religion. Technically, such a person remains Jewish, like all Jews, provided that the original conversion is valid. However, in some recent cases,
Haredi rabbinical authorities, as well as the current
Religious Zionist Israeli
Chief Rabbinate, have taken the view that a given convert's lapse from Orthodox Jewish observance is evidence that he or she cannot, even at the time of the conversion, have had the full intention to observe the commandments and that the conversion must therefore have been invalid. A valid Jewish court of sufficient stature has the ability to revoke a person's or a group's status as Jews. This was done for the
lost Ten Tribes of Israel and the
Samaritans. == Religious definitions ==