1Abram was ninety-nine years old when the LORD appeared to Abram and said to him, "I am El the Almighty. Walk before me and be unblemished."2I will give my covenant between myself and you, and I will multiply you exceedingly.3Abram fell on his face, and God spoke with him, saying,4"Behold, my covenant is with you, and you shall be the father of a multitude of nations."5Your name shall no longer be called Abram, but your name shall be Abraham, for I have made you the father of a multitude of nations.6I will make you exceedingly fruitful, and I will make you into nations, and kings shall come from you.7I will establish my covenant between myself and you and your seed after you throughout their generations as an everlasting covenant, to be God to you and to your seed after you.8I will give to you and to your seed after you the land of your sojourning—all the land of Canaan—as an everlasting possession, and I will be their God.9God said to Abraham, "You shall keep my covenant, you and your seed after you throughout their generations."10This is my covenant which you shall keep between myself and you and your seed after you: every male among you shall be circumcised.11You shall cut off the flesh of your foreskin, and it shall be a sign of the covenant between myself and you.12Every male among you throughout your generations shall be circumcised when eight days old—the one born in your house and the one bought with silver from any foreigner who is not of your seed.13The one born in your house and the one bought with your silver must be circumcised, so that my covenant may be in your flesh as an everlasting covenant.14Any uncircumcised male who does not have the flesh of his foreskin cut off shall be cut off from his people; he has broken my covenant.15God said to Abraham, "As for Sarai your wife, do not call her name Sarai any longer, for her name shall be Sarah."16I will bless her, and I will also give you a son from her; I will bless her, and she shall become nations—kings of peoples shall come from her.17Abraham fell on his face and laughed; he said in his heart, "Can a son be born to a man who is a hundred years old? Can Sarah, who is ninety years old, bear a son?"18Abraham said to God, "May Ishmael live before you."19God said, "Truly, 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 seed after him."20As for Ishmael, I have heard you; behold, I have blessed him, I will make him fruitful and multiply him exceedingly; he shall father twelve leaders, and I will make him into a great nation.21But my covenant I will establish with Isaac, whom Sarah shall bear to you at this appointed time next year.22When he had finished speaking with him, God went up from Abraham.23Abraham took Ishmael his son, all those born in his house, and all those bought with his silver—every male among the men of Abraham's house—and circumcised the flesh of their foreskins on that same day, just as God had spoken to him.24Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin.25Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin.26On that very day Abraham and Ishmael his son were circumcised.27All the men of his house—those born in the house and those bought with silver from a foreigner—were circumcised with him.