Bar and Bat Mitzvah "son" (), while "bat" () means "daughter" in Hebrew, and "mitzvah" () means "commandment" or "law" (plural: "mitzvot"). Thus "bar mitzvah" and "bat mitzvah" literally translate to "son of commandment" and "daughter of commandment". However, in rabbinical usage, the word "bar" means "under the category of" or "subject to". "Bar mitzvah" therefore translates to "an [agent] who is subject to the law". Although the term is commonly used to refer to the ritual itself, in fact the phrase originally refers to the person. The modern method of celebrating becoming a bar mitzvah did not exist in the time of the
Bar and Bat Mitzvah the family and the community. Bar mitzvah is mentioned in the Mishnah (Ethics of the Fathers, ) and in the Talmud. In some classic sources the age of 13 appears for instance as the age from which males must fast on the Day of Atonement, while females fast from the age of 12. The age of b'nai mitzvah roughly coincides with physical puberty. The bar or bat mitzvah ceremony is usually held on the first Shabbat after a boy's thirteenth and a girl's twelfth birthday (or thirteenth in Reform congregations). "Bar" () is a Jewish Babylonian Aramaic word literally meaning