10This is My covenant with you and your descendants after you, which you are to keep: Every male among you must be circumcised.
11You are to circumcise the flesh of your foreskin, and this will be a sign of the covenant between Me and you.
12Generation after generation, every male must be circumcised when he is eight days old, including those born in your household and those purchased from a foreigner — even those who are not your offspring.
— Genesis 17:10-12