"There was given to me a thorn in the flesh, a messenger of Satan."
25. And must this mighty apostle, O merciful God, be subject to trials lest he exalt himself because of his great revelations? Then how should others, how should such infirm beings as we, be free from self-exaltation? Many teachers have explained Paul's thorn to be the temptations of the flesh. The Latin text is responsible for this interpretation; it reads, "stimulus carnis," a spear, or thorn for the flesh. Yet that rendering does not do justice to the words. Paul is not in the habit of terming temptations of the flesh "thorns." The thorn stands rather for something painful and afflicting. In "a thorn of the flesh" the thought is not of an instrumentality whereby the flesh stings, but of something that stings the flesh. The Greek text impels us to the thought of a thorn for the flesh, or a thorn upon or in the flesh. The idea is much like that in the German proverb, "The clog is bound to the dog's neck." We may imagine Paul expressing himself: "As a clog to a dog's neck, as a ring in a bear's nose, a bit in a horse's mouth or a gag in the mouth of a swine, in order to restrain them from running, biting and general mischief,—so is my thorn a clog to my body lest I exalt myself."
26. But Paul himself explains the nature of the clog, or thorn. He calls it "a messenger of Satan," a devil, to "buffet" him, or to flay and jog him. Hence a spiritual trial cannot be meant. The explanation appeals to me that the persecutions and sufferings the apostle recounts above constitute the devil's flaying. Thus his meaning would be: "I have received great revelations, for which reason the clog is bound to the dog; that is, the many dangers and misfortunes with which the angel of the devil buffets and humiliates my body will make me forget to exalt myself. They are the thorn in my flesh, or upon my body; for God will not permit it to come upon my soul."
27. Yet the text seems to imply some peculiar work of the devil upon Paul's body, for it says the thorn, or clog, is the messenger Satan employs to beat his body; and also that the apostle diligently but unavailingly thrice besought the Lord to remove it. I do not imagine him praying for the cessation of persecutions in a spirit of unwillingness to suffer them. But since he does not specify the affliction, we must let it remain a secret one, a distress known only to himself. It is enough for us to know that while God had given him great revelations, revelations beyond human ken, he also bound the clog to him—gave him a thorn for his body—to prevent his exaltation of himself; and that the knowledge of the buffetings and flaying caused by this clog, or devil, are likewise beyond human ken.
"My power is made perfect in weakness."
28. It is a strange sort of strength which is weak and by its weakness grows stronger. Who ever heard of weak strength? or more absurd still, that strength is increased by weakness? Paul would here make a distinction between human strength and divine. Human strength increases with enhancement and decreases with enfeeblement. But God's power—his Word in us—rises in proportion to the pressure it receives. It is characteristic of God the Creator that he creates all things from naught, and again reduces to naught all created things. Human power cannot do this. The power of God is the true palm-wood which buoys itself in proportion as it is burdened and weighted.
29. Note here, "weakness" is not to be understood in a spiritual sense, as on a previous occasion, but externally; as not illness alone, but every sort of evil, misfortune, suffering and persecution calculated to buffet and humble the body. The power of Christ, in connection with which spiritual weakness cannot exist, is invoked against this weakness likewise. He says, "Most gladly will I glory in my weaknesses, that the power of Christ may rest upon me." And his weaknesses he immediately explains as infirmities, injuries, necessities, persecutions and distresses. The thought, then, is: Christ is not mighty within us, his word and his faith are not strong in us, unless our bodies suffer affliction. The false apostles, however, take excellent care to escape suffering.