Note 7 at 2 Cor. 3:4: Paul is expressing absolute trust and confidence in God's ministry through him because of the fruit which it has borne in the lives of these Corinthians (see note 5 at v. 3). If what we believe and teach is truly of God, it will bear good fruit. Someone who claims to have a corner on the truth, but it never produces good fruit is deceived. Paul was not deceived, as the fruit of his ministry proved.