Genesis 17 reveals the covenant of circumcision - which is for all who accept YHWH as their God!
Genesis 17:4 "As for me, this is my covenant with you: you will be the father of many nations. 5 Your name will no longer be Avram [exalted father], but your name will be Avraham [father of many], because I have made you the father of many nations. 6 I will cause you to be very fruitful. I will make nations of you, kings will descend from you.
7 "I am establishing my covenant between me and you, along with your descendants after you, generation after generation, as an everlasting covenant, to be God for you and for your descendants after you. 8 I will give you and your descendants after you the land in which you are now foreigners, all the land of Kena'an, as a permanent possession; and I will be their God."
9 God said to Avraham, "As for you, you are to keep my covenant, you and your descendants after you, generation after generation. 10 Here is my covenant, which you are to keep, between me and you, along with your descendants after you: every male among you is to be circumcised. 11 You are to be circumcised in the flesh of your foreskin; this will be the sign of the covenant between me and you.
12 Generation after generation, every male among you who is eight days old is to be circumcised, including slaves born within your household and those bought from a foreigner not descended from you. 13 The slave born in your house and the person bought with your money must be circumcised; thus my covenant will be in your flesh as an everlasting covenant. 14 Any uncircumcised male who will not let himself be circumcised in the flesh of his foreskin -that person will be cut off from his people, because he has broken my covenant." (CJB)