Luke 1:57-59

Now the time had come for Elizabeth to give birth, and she gave birth to a son. Her neighbors and relatives heard that the Lord had shown His great mercy toward her, and they were rejoicing with her. It happened that on the eighth day they came to circumcise the child [as required by the Law], and they intended to name him Zacharias, after his father; [Gen 17:12; Lev 12:3]