Genesis 17:7

4 `I -- lo, My covenant [is] with thee, and thou hast become father of a multitude of nations;

5 and thy name is no more called Abram, but thy name hath been Abraham, for father of a multitude of nations have I made thee;

6 and I have made thee exceeding fruitful, and made thee become nations, and kings go out from thee.

7 `And I have established My covenant between Me and thee, and thy seed after thee, to their generations, for a covenant age-during, to become God to thee, and to thy seed after thee;

8 and I have given to thee, and to thy seed after thee, the land of thy sojournings, the whole land of Canaan, for a possession age-during, and I have become their God.`

9 And God saith unto Abraham, `And thou dost keep My covenant, thou and thy seed after thee, to their generations;

10 this [is] My covenant which ye keep between Me and you, and thy seed after thee: Every male of you [is] to be circumcised;