Genesis 17:8-10

Young's Literal Translation

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;