Genesis 17:7-10

7Yes, I will establish My covenant between Me and you and your seed after you throughout their generations for an everlasting covenant, in order to be your God and your seed’s God after you.

8I will give to you and to your seed after you the land where you are an outsider —the whole land of Canaan—as an everlasting possession, and I will be their God.”

9God also said to Abraham, “As for you, My covenant you must keep, you and your seed after you throughout their generations.

10This is My covenant that you must keep between Me and you and your seed after you: all your males must be circumcised.