Giving no offense in anything, that the ministry be not blamed:
All Commentaries on 2 Corinthians 6:3 Go To 2 Corinthians 6
Ambrosiaster
AD 400
By his faith and vigilance, Paul is cutting away everything which might cause the negligent to stumble, out of fear that their sluggishness might present his disciples with a cause for stumbling. Fault would have been found with their ministry if they did not exemplify in their deeds the things they were teaching. Commentary on Paul’s Epistles.