Paul finishes his “foolish boasting” by showing that true apostolic authority is not proved by self-exalting experiences, but by Christ’s power at work through weakness, integrity, endurance, and readiness to confront unrepentant sin. He urges the Corinthians to repent and examine themselves before his third visit, because his authority was given to build up the church, though he is ready to act with severity if necessary.

Paul says he must go on “boasting,” even though it is not profitable. He does this because the Corinthians had been influenced by people who measured spiritual authority by impressive claims. So Paul refers to visions and revelations from the Lord, but he does so with great restraint. He speaks of “a man in Christ,” clearly referring to himself, and says that fourteen years earlier he was caught up to the “third heaven,” also called “paradise.” Whether this happened in the body or out of the body, he does not know; God knows. Paul does not dwell on the experience, because his aim is not to magnify it, but to show that even extraordinary revelations are not the true foundation of apostolic authority.

That is why Paul refuses to make this experience the center of his ministry. He says he will boast about such a man, but about himself he will boast only in his weaknesses. Even if he chose to speak more openly, he would be telling the truth. Still, he holds back so that no one will think more of him than what can be seen in his life and heard in his message. This is a mark of true ministry: it is confirmed by observable faithfulness and truthful proclamation, not by self-exalting display.

Paul then explains that because of the extraordinary nature of these revelations, a “thorn in the flesh” was given to him to keep him from becoming arrogant. He also calls it a “messenger of Satan” sent to harass him. The exact identity of the thorn cannot be known with certainty. The most likely view is some form of satanically permitted opposition, though Paul leaves the matter unspecified, and the language may point to something deeply personal and painful. The main point is clear: God used this painful affliction to humble Paul and guard him from pride.

Paul pleaded with the Lord three times to remove the affliction. But the Lord answered, “My grace is enough for you, for my power is made perfect in weakness.” Christ’s grace did not remove the trial, but it was fully sufficient to sustain Paul in it. So Paul gladly boasts in his weaknesses, because in that weakness the power of Christ rests on him. He can therefore be content with weaknesses, insults, hardships, persecutions, and difficulties for Christ’s sake. His point is not that suffering is pleasant in itself, but that weakness becomes the setting in which Christ’s power is most clearly displayed. When he is weak, then he is strong.

This is not merely a general lesson about suffering. In the flow of 2 Corinthians, Paul is defending true apostolic ministry against rival boasting. Weakness here is not sentimental language. It is the Christ-shaped pattern by which genuine ministry is recognized.

Paul then says the Corinthians forced him into this “foolish” defense, when they should have commended him. He was in no way inferior to the so-called “super-apostles,” though in himself he is nothing. Whatever worth his ministry has comes from Christ, not from personal greatness. Yet the signs of a true apostle were performed among them with great perseverance, through signs, wonders, and mighty works. God had publicly authenticated Paul’s ministry, and Paul had also shown the endurance that belongs to a true apostle.

Paul next addresses the complaint that his refusal to accept financial support somehow meant he treated them unfairly. He asks how they were treated worse than other churches, except that he himself was not a burden to them, and then adds the ironic line, “Forgive me this wrong!” As he prepares for a third visit, he again says he will not be a burden to them, because he does not want their possessions, but them. Like a parent caring for children, Paul seeks their good rather than their money. He is willing to spend and be spent for them, for their very lives.

Some were still suspicious, so Paul repeats the accusation with irony: perhaps he was crafty and deceived them. He answers by pointing to the facts. Did he exploit them through anyone he sent? Titus did not take advantage of them, nor did the brother who went with him. They walked in the same spirit and behaved in the same way. The charge of deceit had no basis.

Paul then makes clear that he is not merely defending himself. He speaks in Christ before God, and everything he does is for their upbuilding. Yet that pastoral purpose includes serious warning. He fears that when he comes he may find quarreling, jealousy, anger, selfish ambition, slander, gossip, arrogance, and disorder. He also fears that he will grieve over many who sinned earlier and still have not repented of impurity, sexual immorality, and licentiousness. Repentance is not optional. Persistent, unrepentant sin in the church calls for real confrontation.

At the beginning of chapter 13, Paul says this will be his third visit. He quotes the Old Testament principle that every matter must be established by two or three witnesses. This shows that any disciplinary action will be just, not arbitrary. He repeats the warning he gave earlier: if he comes again and finds ongoing sin, he will not spare. Those who wanted proof that Christ speaks through Paul may receive that proof in a form they do not want—through discipline.

Paul explains that Christ is not weak toward them, but powerful among them. Christ was crucified in weakness, yet he lives by God’s power. In the same way, Paul and his coworkers are weak in him, but they will live with him by God’s power toward the Corinthians. Christ’s weakness was not sinful weakness, but voluntary submission to suffering and death. Resurrection power vindicated him, and Paul’s ministry follows that same pattern. Therefore, Paul’s apparent weakness must not be mistaken for lack of authority.

Then Paul turns the demand for proof back on the Corinthians: “Test yourselves to see whether you are in the faith; examine yourselves.” This is a real call to self-examination within the professing church. It may include both the question of whether their faith is genuine and whether they are presently living faithfully in keeping with it. Paul expects that Christ is in them—unless indeed they fail the test. That warning should not be softened.

Paul hopes they will recognize that he and his companions have not failed the test. But his main concern is not his own appearance of approval. He prays that they will do no wrong. Even if he appears weak, he is content so long as they do what is right. He cannot act against the truth, but only for the truth. This is the nature of apostolic authority: it is bound to God’s truth and aimed at the church’s good.

So Paul says he rejoices when he is weak and they are strong. He prays for their restoration—for them to be made complete and put right. That is why he writes while absent: he wants them to respond before he arrives, so that when he comes he will not have to act harshly. The Lord gave him authority for building up, not for tearing down. But because that authority is real, if they refuse to repent, he is prepared to use it.

Key Truths: - True apostolic authority is authenticated by Christ’s power in weakness, not by self-exalting display. - Extraordinary revelations may be real, but they are not the main proof of faithful ministry. - God may permit humbling affliction to restrain pride. - Christ’s grace does not always remove the trial; it sustains believers within it. - Paul’s apostleship was confirmed by perseverance, signs, wonders, and mighty works. - Persistent unrepentant sin in the church requires self-examination, repentance, and, if necessary, discipline. - Paul’s authority is for edification, but it includes readiness to confront ongoing rebellion.