Luke 1:59
and on the eighth day came to circumcise the child. They were going to call it by the name of its father Zechariah,
Luke 2:21
When the eight days had passed for his circumcision, he was named Jesus ??the name given by the angel before he had been conceived in the womb.
Philippians 3:5
I was circumcised on the eighth day after birth; I belonged to the race of Israel, to the tribe of Benjamin; I was the Hebrew son of Hebrew parents, a Pharisee as regards the Law,
Acts 7:8
God also gave him the covenant of circumcision. So Abraham became the father of Isaac, whom he circumcised on the eighth day, Isaac was the father of Jacob, and Jacob of the twelve patriarchs.