The term “bar mitzvah” first became associated with a Jewish boy’s coming-of-age ceremony in the 15th century.
The Hebrew words bar mitzvah literally mean “son of commandment,” but the expression originally described a person who had reached the age of religious responsibility, rather than a standardized party or service. Over time, communities increasingly connected the status with public synagogue honors, especially participation in the Torah reading.
The ceremony developed gradually rather than appearing everywhere at one moment. Customs differ among Jewish movements and communities: some emphasize the Torah reading, while others focus on a speech, prayers, or communal celebration. The modern event therefore combines an older concept of religious obligation with later ceremonial practices.
A common mix-up is treating the 15th century as the beginning of the underlying age requirement. Jewish legal traditions about responsibility at age 13 are much older; the date refers to the ceremonial use of the term.