For we can do nothing against the truth, but for the truth.
All Commentaries on 2 Corinthians 13:8 Go To 2 Corinthians 13
Paul is saying this because there is no power against the truth. They cannot reprove someone who is living a good life, but only someone who is an enemy of the law. This power will come to nothing if people have done what is good. Commentary on Paul’s Epistles.