Luke 1:59
On the eighth day they came to circumcise the child, and they tried to name him Zechariah, after his father.
Luke 2:21
When He was eight days old and it was time to circumcise Him, He was named Jesus, the name given by the angel before Mary had conceived Him.
Philippians 3:5
circumcised when I was a week old; a descendant of Israel; a member of the tribe of Benjamin; a Hebrew, a son of Hebrews. Measured by the law, I was a Pharisee;
Acts 7:8
And with Abraham He made the sacred compact of circumcision, and he became the father of Isaac and circumcised him on the eighth day, and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.