πλεονεκτέω

That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger of all such, as we also have forewarned you and testified.

Lest Satan should get an advantage of us: for we are not ignorant of his devices.

Receive us; we have wronged no man, we have corrupted no man, we have defrauded no man.

Did I make a gain of you by any of them whom I sent unto you?

I desired Titus, and with him I sent a brother. Did Titus make a gain of you? walked we not in the same spirit? walked we not in the same steps?