American Standard Version (ASV):
that he may establish thee this day unto himself for a people, and that he may be unto thee a God, as he spake unto thee, and as he sware unto thy fathers, to Abraham, to Isaac, and to Jacob.
King James Version (KJV):
That he may establish thee to day for a people unto himself, and [that] he may be unto thee a God, as he hath said unto thee, and as he hath sworn unto thy fathers, to Abraham, to Isaac, and to Jacob.