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; And the Lord hath avouched - Publicly declared, by the blessings he pours down upon them, that he has taken them to be his peculiar people. Thus the covenant is made and ratified between God and his followers.
Related Commentaries of Deuteronomy 26:18
Deuteronomy 26:18
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;