Deuteronomy 26:17-18

17Thou hast avouched the LORD this day to be thy God, and that thou shouldest walk in his ways, and keep his statutes, and his commandments, and his judgments, and hearken unto his voice:

18and the LORD hath avouched thee this day to be a peculiar people unto himself, as he hath promised thee, and that thou shouldest keep all his commandments;