Genesis 17:8-10

Revised Standard Version Catholic Edition

⁸ And I will give to you, and to your descendants 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 descendants after you throughout their generations. ¹⁰ This is my covenant, which you shall keep, between me and you and your descendants after you: Every male among you shall be circumcised.