Paul says boasting is necessary, though not profitable, and moves on to visions and revelations of the Lord. He knows a man in Christ who fourteen years ago was caught up to the third heaven, into paradise, whether in the body or out of it he does not know, and heard things that cannot be told. On behalf of such a man he will boast, but not on his own, except of his weaknesses. He refrains so that no one will think more of him than what they see and hear from him.
So that he would not be conceited by the greatness of the revelations, a thorn was given him in the flesh, a messenger of Satan to torment him. Three times he pleaded with the Lord to remove it. The Lord's answer was that his grace was enough and that his power reaches its fullness in weakness. So Paul will boast all the more gladly of his weaknesses, so that Christ's power may rest on him. For Christ's sake he is content with weaknesses, insults, hardships, persecutions and calamities, for when he is weak, then he is strong.
Paul admits he has been a fool, but the Corinthians forced him to it, for they ought to have commended him. The signs of a true apostle were performed among them with utmost patience, with signs, wonders and mighty works. In what were they less favored than other churches, except that he did not burden them? He asks their forgiveness for this wrong.
For the third time he is ready to come, and he will not burden them, for he seeks not what is theirs but them. He will gladly spend and be spent for their souls, even if the more he loves them the less he is loved. Neither he nor Titus took advantage of them. Finally he fears that when he comes he may find quarreling, jealousy, anger, factions, slander, conceit and disorder, and that he may mourn over those who have not repented of their impurity and sexual immorality.