Genesis 17:1-27

17 When Abram was ninety-nine years old the Lord appeared to Abram and said to him, “I am God Almighty; walk before me, and be blameless, 2 that I may make my covenant between me and you, and may multiply you greatly.” 3 Then Abram fell on his face. And God said to him, 4 “Behold, my covenant is with you, and you shall be the father of a multitude of nations. 5 No longer shall your name be called Abram, but your name shall be Abraham, for I have made you the father of a multitude of nations. 6 I will make you exceedingly fruitful, and I will make you into nations, and kings shall come from you. 7 And I will establish my covenant between me and you and your offspring after you throughout their generations for an everlasting covenant, to be God to you and to your offspring after you. 8 And I will give to you and to your offspring after you the land of your sojournings, all the land of Canaan, for an everlasting possession, and I will be their God.”

9 And God said to Abraham, “As for you, you shall keep my covenant, you and your offspring after you throughout their generations. 10 This is my covenant, which you shall keep, between me and you and your offspring after you: Every male among you shall be circumcised. 11 You shall be circumcised in the flesh of your foreskins, and it shall be a sign of the covenant between me and you. 12 He who is eight days old among you shall be circumcised. Every male throughout your generations, whether born in your house or bought with your money from any foreigner who is not of your offspring, 13 both he who is born in your house and he who is bought with your money, shall surely be circumcised. So shall my covenant be in your flesh an everlasting covenant. 14 Any uncircumcised male who is not circumcised in the flesh of his foreskin shall be cut off from his people; he has broken my covenant.”

15 And God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but Sarah shall be her name. 16 I will bless her, and moreover, I will give you a son by her. I will bless her, and she shall become nations; kings of peoples shall come from her.” 17 Then Abraham fell on his face and laughed and said to himself, “Shall a child be born to a man who is a hundred years old? Shall Sarah, who is ninety years old, bear a child?” 18 And Abraham said to God, “Oh that Ishmael might live before you!” 19 God said, “No, but Sarah your wife shall bear you a son, and you shall call his name Isaac. I will establish my covenant with him as an everlasting covenant for his offspring after him. 20 As for Ishmael, I have heard you; behold, I have blessed him and will make him fruitful and multiply him greatly. He shall father twelve princes, and I will make him into a great nation. 21 But I will establish my covenant with Isaac, whom Sarah shall bear to you at this time next year.”

22 When he had finished talking with him, God went up from Abraham. 23 Then Abraham took Ishmael his son and all those born in his house or bought with his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskins that very day, as God had said to him. 24 Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin. 25 And Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin. 26 That very day Abraham and his son Ishmael were circumcised. 27 And all the men of his house, those born in the house and those bought with money from a foreigner, were circumcised with him.

Let me say it again: the story of the Patriarchs (Abraham, Isaac, and Jacob) in Genesis 12-36 is a story of their education and formation into what family life will need to be like if the covenant will need to be passed down from generation to generation. An important part of that covenant is circumcision, but what does it really mean?

I found this comment from Leon Kass to be helpful:

“Male circumcision was, of course, a custom already widely practiced in the ancient world. In pagan societies, circumcision, performed at the time of puberty, was part of a male rite of passage (it may also have served symbolically as an act of human sacrifice to the gods). A mark on his maleness, circumcision was a sign not only of the youth’s new sexual potency but also of his initiation into the male role and male society (putting an end to his primary attachment to his mother and the household, to the society of women and children). But in the new way of ancient Israel, the special obligation of the covenant gives the practice of circumcision a new and nearly opposite meaning. An initiation rite of passage of young males into adult masculinity is transformed into a paternal duty regarding the male newborn. Israel’s covenant with God begins by transforming the meaning of male sexuality and manliness altogether.

I find that really interesting: the Lord is teaching Abraham and his descendants that true masculinity is not a conquering masculinity but a masculinity that is dedicated to something greater than itself, namely toward others.

Note also that Abraham’s body is marked in the exact place where abused the Egyptian slave Hagar. The Lord is teaching Abraham to commit all parts of himself to the Lord, and not to be wise in his own eyes.