Genesis 17:2

17:2 Then I will confirm my covenant between me and you, and I will give you a multitude of descendants.”

Genesis 17:7

17:7 I will confirm my covenant as a perpetual covenant between me and you. It will extend to your descendants after you throughout their generations. I will be your God and the God of your descendants after you.

Genesis 17:10

17:10 This is my requirement that you and your descendants after you must keep: Every male among you must be circumcised.