Genesis 17:7-10

7And I will establish my covenant between me and thee, and thy seed after thee in their generations, for an everlasting covenant, to be a 1God to thee, and to thy seed after thee.

8And I give to thee, and to thy seed after thee, the land of thy sojourning, all the land of Canaan, for an everlasting possession; and I will be a 2God to them.

9And 3God said to Abraham, And [as for] thee, thou shalt keep my covenant, thou and thy seed after thee in their generations.

10This is my covenant which ye shall keep, between me and you and thy seed after thee — that every male among you be circumcised.