What happens during circumcision?
The baby is placed on an empty chair to symbolise the presence of the prophet of Elijah.
A circumciser places the baby on the Grandfather (or a trusted member of the congregation).
The Father blesses his son with 'Blessed are you Lord our God, King of the Universe, who sanctified us with the Mitzvot and commanded us to enter my son into the covenant of Abraham'.
The congregation responds with 'Just as he has entered into the covenant, so may he enter into Torah, into marriage, and into good deeds'.
A blessing is given over wine, and the foreskin of the penis of the baby is removed. The family then hold a festive meal.