At 8 days old: brit milah
At 13 years old: Bar Mitzvah
The brit milah (Hebrew: בְּרִית מִילָה‎ [bʁit miˈla], Ashkenazi pronunciation [bʁis ˈmilə], "covenant of circumcision"; Yiddish pronunciation, bris [bʀɪs]) is a Jewish religious male circumcision ceremony performed on the eighth day of a male infant's life by a mohel. The brit milah is followed by a celebratory meal (seudat mitzvah).
There is a baby naming ceremony that is normally held within the first few months of birth. This may take place in synagogue but that isn't required. This is also when her Hebrew name is announced.
The names of Jewish boys are announced to the public at their circumcision.
The child receives a Hebrew name at the Brit (Bris) ceremony or upon immersion in the Mikvah.
Bird´s nest Roberta
A Bat Mitzvah is a ceremony in which a Jewish girl is considered to have come of age and now responsible to obey the commandments of Judiasm. A Bar Mitzvah is the name of the same ceremony, but for a boy.
There is no required ceremony, and no particular name for it, tomark the occasion when a Jewish boy becomes a Bar Mitzvah.Answer:The above answer may or may not be technically correct, but it will only serve to confuse people. The ceremony is called a Bar Mitzva ceremony. Also, it might not be technically required, but it is virtually universally customary and is thought of as a requirement.
Jewish boys undergo a "bris" or "brit" (circumcision) when they're 8 days old.
We hold a shalom zachar (celebratory meal) on the first Friday night in the home, and then a brit milah circumcision) on the eighth day after the birth. See also: http://judaism.answers.com/jewish-philosophy/jewish-life-cycle-brit-bar-mitzvah-wedding-death-and-mourning
Eight days after a boy is born, he is circumcised and named - the traditional way of bringing him into the community. The ceremony is accompanied by a festive meal in which friends and family participate. Some, but not all, Jews mark the birth of a girl with a simchat bat - a party/festive meal which can take place any time following the birth, as convenient for the parents. The naming of a girl traditionally takes place in the synagogue, on a Monday, Thursday or Saturday (Sabbath) following the birth.
It is usually given at the bris ceremony, when the boy is at least 8 days old (older if there are health concerns).
Rosenzweig is a German surname often held by those with Jewish ancestry.