Confirmeth not, i.e. performeth not; for he that transgresseth doth in some sort destroy and make void the law of God, as to the main end for which it was given, even to the regulation of his life and actions, and as far as lies in him disannuls the authority and force of God's law.
Related Commentaries of Deuteronomy 27:26
Deuteronomy 27:26
26 Cursed be he that confirmeth not all the words of this law to do them. And all the people shall say, Amen.