Rituals: a religious ceremony consisting of a series of actions performed according to a prescribed order
Brit Milah: Ceremony of male circumcision; the removal of the foreskin for religious reasons
Mohel
The person who performs the ritual of circumcision
Genesis: 17: 11-14: The Source of the commandment in the Torah to perform cirumcision
Bat Mitzvah: initiation ceremony marking the 12th birthday of a Jewish girl and signifying the beginning of religious responsibility, literally "daughter of the commandment"