A brief and earnest exhortation by way of conclusion to the second and longest discourse of the book.
Thou hast avouched - literally, “made to say:” so also in the next verse. The sense is: “Thou hast given occasion to the Lord to say that He is thy God,” i. e. by promising that He shall be so. Compare Exodus 24:7; Joshua 24:14-25,
16 This day the LORD thy God hath commanded thee to do these statutes and judgments: thou shalt therefore keep and do them with all thine heart, and with all thy soul.
17 Thou hast avouched the LORD this day to be thy God, and to walk in his ways, and to keep his statutes, and his commandments, and his judgments, and to hearken unto his voice:
18 And the LORD hath avouched thee this day to be his peculiar people, as he hath promised thee, and that thou shouldest keep all his commandments;
19 And to make thee high above all nations which he hath made, in praise, and in name, and in honour; and that thou mayest be an holy people unto the LORD thy God, as he hath spoken.