Genesis 21:4

⁸He gave him the covenant of circumcision. So Abraham became the father of Isaac, and circumcised him the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve patriarchs.

²¹When eight days were fulfilled for the circumcision of the child, his name was called Jesus, which was given by the angel before he was conceived in the womb.

⁵⁹On the eighth day, they came to circumcise the child; and they would have called him Zacharias, after the name of his father.

³In the eighth day the flesh of his foreskin shall be circumcised.

²²Moses has given you circumcision (not that it is of Moses, but of the fathers), and on the Sabbath you circumcise a boy. ²³If a boy receives circumcision on the Sabbath, that the law of Moses may not be broken, are you angry with me because I made a man completely healthy on the Sabbath?

⁶They were both righteous before God, walking blamelessly in all the commandments and ordinances of the Lord.

⁴⁸When a stranger lives as a foreigner with you, and would like to keep the Passover to the LORD, let all his males be circumcised, and then let him come near and keep it. He shall be as one who is born in the land; but no uncircumcised person shall eat of it.

³²Whatever thing I command you, that you shall observe to do. You shall not add to it, nor take away from it.

¹⁰This is my covenant, which you shall keep, between me and you and your offspring after you. Every male among you shall be circumcised. ¹¹You shall be circumcised in the flesh of your foreskin. It will be a token of the covenant between me and you. ¹²He who is eight days old shall be circumcised among you, every male throughout your generations, he who is born in the house, or bought with money from any foreigner who is not of your offspring.