Bar and Bat Mitzvah to the event. However, this does not delay the onset of rights and responsibilities of being a Jewish adult which comes about strictly by virtue of age. The obligation to lay tefillin begins when a boy reaches bar mitzvah age. The common custom is for the bar mitzvah boy to begin putting on tefillin one to three months before his bar mitzvah. This way, by the time he is obligated in the commandment, he will already know how to fulfill it properly. The first mention of a party associated with a synagogue bar mitzvah was in the 13th century, so
Adult bar and bat mitzvah Adult bar and bat mitzvah An adult bar/bat mitzvah is a bar or bat mitzvah of a person older than the customary age. Traditionally, a bar or bat mitzvah occurs at age 13 and 12 for boys and girls respectively. However, many adult Jews who have never had a bar or bat mitzvah choose to have one later in life, and many who have had one at the traditional age choose to have a second. An adult bar or bat mitzvah can be held at any age after adulthood is reached and can be performed in a variety of ways.