Bar and Bat Mitzvah the commandments . . ." The Talmud gives 13 as the age at which a boy's vows are legally binding, and states that this is a result of his being a "man", as required in . The term "bar mitzvah", in the sense it is now used, cannot be clearly traced earlier than the 14th century, the older rabbinical term being "gadol" (adult) or "bar 'onshin" (legally responsible for own misdoings). Many sources indicate that the ceremonial observation of a bar mitzvah developed in the Middle Ages, however, there are extensive earlier references to thirteen as the age of majority
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