Avouched, or declared, or professed, or owned. This day, i.e. at this time, in this wilderness, where thou hast accepted and ratified God's covenant.
Related Commentaries of Deuteronomy 26:17
Deuteronomy 26:17
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: