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. For the person to be accepted as Jewish by an Orthodox or Conservative community (for example, on an occasion of their bar or bat mitzvah or marriage), they require a formal conversion (in accordance with halakhic standards). Orthodox Judaism has a predominant position in Israel. Although Orthodox and Conservative Judaism do not recognize Jewishness through patrilineal descent, "it should also be noted, however, that in the case of a child born to a Jewish father but to a non-Jewish mother, most Orthodox rabbis will relax the stringent demands normally made of would-be converts", and the Rabbinical Assembly of the Conservative movement "agreed that 'sincere Jews by choice' should be warmly welcomed into the community".