Mitzvah Mitzvah In its primary meaning, the Hebrew word (; meaning "commandment", , , Biblical: '; plural ' , Biblical: '; from ' "command") refers to precepts and commandments commanded by God, with the additional connotation of one's religious duty. It is used in rabbinical Judaism to refer to the 613 commandments given in the Torah at biblical Mount Sinai and the seven rabbinic commandments instituted later for a total of 620. The 613 commandments are divided into two categories: 365 negative commandments and 248 positive commandments. According to the Talmud, all moral laws are, or are derived from, divine commandments.
Adult bar and bat mitzvah Axelrad of Brandeis University officiated the first adult Bar and Bat Mitzvahs in the early 1970s. He encouraged the practice in all denominations of Judaism. Between 1995 and 2001, Hadassah held group adult Bat Mitzvah ceremonies for 180 women. In 2001, the Union for Reform Judaism created a guide on adult Bar and Bat Mitzvah programs which was adopted by 900 congregations. In 2002, the Conservative Movement adopted this guide as well. The process of becoming an adult Bar or Bat Mitzvah involves studying for a year or longer. It consists of Hebrew language, Jewish rituals, Torah readings, and Haftorah