Have I committed an offense in humbling myself that you might be exalted, because I have preached to you the gospel of God freely?
All Commentaries on 2 Corinthians 11:7 Go To 2 Corinthians 11
Ambrosiaster
AD 400
Paul refused payment for two reasons. He would not resemble the false apostles who were preaching for their own advantage and not for the glory of God, nor would he allow the vigor of his message to become sluggish. For the person who accepts payment from sinners loses the authority to censor them. Commentary on Paul’s Epistles.