Every male throughout every generation that is eight days old shall be circumcised, whether born in your household or bought with money from a foreigner who is not your descendant.
Then Abraham took Ishmael, his son, and all who were born in his house, and all who were bought with his money, every male among the men of Abraham’s household, and circumcised the flesh of their foreskins that very same day as God had said to him.
Likewise you must do the same with your oxen and with your sheep. Seven days it shall remain with its mother, but on the eighth day you must give it to Me.
Then He gave him the covenant of circumcision. And Abraham became the father of Isaac and circumcised him on the eighth day. And Isaac became the father of Jacob, and Jacob became the father of the twelve patriarchs.