And it came to pass, that on the eighth day they came to circumcise the child; and they called him Zacharias, after the name of his father.
Luke 2:21
And when eight days were accomplished for the circumcising of the Child, His name was called JESUS, who was so named by the angel before He was conceived in the womb.
And he that is eight days old shall be circumcised among you, every manchild in your generations, he that is born in the house or bought with money from any stranger who is not of thy seed.
And He gave him the covenant of circumcision. And so Abraham begot Isaac and circumcised him on the eighth day; and Isaac begot Jacob, and Jacob begot the twelve patriarchs.