I will establish My covenant as an everlasting covenant between Me and you and your descendants after you, to be your God and the God of your descendants after you.
KJV
And I will establish my covenant between me and thee and thy seed after thee in their generations for an everlasting covenant, to be a God unto thee, and to thy seed after thee.
ASV
And I will establish my covenant between me and thee and thy seed after thee, throughout their generations for an everlasting covenant, to be a God unto thee and to thy seed after thee.