Genesis 17:8-10

King James Version

⁸ And I will give unto thee, and to thy seed after thee, the land wherein thou art a stranger, all the land of Canaan, for an everlasting possession; and I will be their God.

⁹ And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.

¹⁰ This is my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.