A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
2 Corinthians 12:1
co2 12:1REVELATIONS IN WHICH HE MIGHT GLORY: BUT HE RATHER GLORIES IN INFIRMITIES, AS CALLING FORTH CHRIST'S POWER: SIGNS OF HIS APOSTLESHIP: HIS DISINTERESTEDNESS: NOT THAT HE IS EXCUSING HIMSELF TO THEM; BUT HE DOES ALL FOR THEIR GOOD, LEST HE SHOULD FIND THEM NOT SUCH AS HE DESIRED, AND SO SHOULD HAVE TO BE SEVERE AT HIS COMING. (2Co. 12:1-21)
He proceeds to illustrate the "glorying in infirmities" (Co2 11:30). He gave one instance which might expose him to ridicule (Co2 11:33); he now gives another, but this one connected with a glorious revelation of which it was the sequel: but he dwells not on the glory done to himself, but on the infirmity which followed it, as displaying Christ's power. The oldest manuscripts read, "I MUST NEEDS boast (or glory) though it be not expedient; for I will come." The "for" gives a proof that it is "not expedient to boast": I will take the case of revelations, in which if anywhere boasting might be thought harmless. "Visions" refers to things seen: "revelations," to things heard (compare Sa1 9:15) or revealed in any way. In "visions" their signification was not always vouchsafed; in "revelations" there was always an unveiling of truths before hidden (Dan 2:19, Dan 2:31). All parts of Scripture alike are matter of inspiration; but not all of revelation. There are degrees of revelation; but not of inspiration.
of--that is, from the Lord; Christ, Co2 12:2.
2 Corinthians 12:2
co2 12:2Translate, "I know," not "I knew."
a man--meaning himself. But he purposely thus distinguishes between the rapt and glorified person of Co2 12:2, Co2 12:4, and himself the infirmity-laden victim of the "thorn in the flesh" (Co2 12:7). Such glory belonged not to him, but the weakness did. Nay, he did not even know whether he was in or out of the body when the glory was put upon him, so far was the glory from being his [ALFORD]. His spiritual self was his highest and truest self: the flesh with its infirmity merely his temporary self (Rom 7:25). Here, however, the latter is the prominent thought.
in Christ--a Christian (Rom 16:7).
above--rather, simply "fourteen years ago." This Epistle was written A.D. 55-57. Fourteen years before will bring the vision to A.D. 41-43, the time of his second visit to Jerusalem (Act 22:17). He had long been intimate with the Corinthians, yet had never mentioned this revelation before: it was not a matter lightly to be spoken of.
I cannot tell--rather as Greek, "I know not." If in the body, he must have been caught up bodily; if out of the body, as seems to be Paul's opinion, his spirit must have been caught up out of the body. At all events he recognizes the possibility of conscious receptivity in disembodied spirits.
caught up-- (Act 8:39).
to the third heaven--even to, &c. These raptures (note the plural, "visions," "revelations," Co2 12:1) had two degrees: first he was caught up "to the third heaven," and from thence to "Paradise" (Co2 12:4) [CLEMENT OF ALEXANDRIA, Miscellanies, 5.427], which seems to denote an inner recess of the third heaven [BENGEL] (Luk 23:43; Rev 2:7). Paul was permitted not only to "hear" the things of Paradise, but to see also in some degree the things of the third heaven (compare "visions," Co2 12:1). The occurrence TWICE of "whether in the body . . . I know not, God knoweth," and of "lest I should be exalted above measure," marks two stages in the revelation. "Ignorance of the mode does not set aside the certain knowledge of the fact. The apostles were ignorant of many things" [BENGEL]. The first heaven is that of the clouds, the air; the second, that of the stars, the sky; the third is spiritual (Eph 4:10).
2 Corinthians 12:3
co2 12:3Translate, "I know."
out of--Most of the oldest manuscripts read "apart from."
2 Corinthians 12:4
co2 12:4unspeakable--not in themselves, otherwise Paul could not have heard them; but as the explanation states, "which it is not lawful . . . to utter" [ALFORD]. They were designed for Paul's own consolation, and not for communication to others. Some heavenly words are communicable (Exo 34:6; Isa 6:3). These were not so. Paul had not the power adequately to utter; nor if he had, would he have been permitted; nor would earthly men comprehend them (Joh 3:12; Co1 2:9). A man may hear and know more than he can speak.
2 Corinthians 12:5
co2 12:5of myself--concerning myself. Self is put in the background, except in respect to his infirmities. His glorying in his other self, to which the revelations were vouchsafed, was not in order to give glory to his fleshly self, but to bring out in contrast the "infirmities" of the latter, that Christ might have all the glory.
2 Corinthians 12:6
co2 12:6For--Not but that I might glory as to "myself" (Co2 12:5); "FOR if I should desire to glory, I shall not be a fool"; for I have things to glory, or boast of which are good matter for glorying of (not mere external fleshly advantages which when he gloried in [2Co. 11:1-33] he termed such glorying "folly," Co2 11:1, Co2 11:16-17).
think of me--Greek, "form his estimate respecting me."
heareth of me--Greek, "heareth aught from me." Whatever haply he heareth from me in person. If on account of healing a cripple (Act 14:12-13), and shaking off a viper (Act 28:5), the people thought him a god, what would they have not done, if he had disclosed those revelations? [ESTIUS]. I wish each of you to estimate me by "what he sees" my present acts and "hears" my teaching to be; not by my boasting of past revelations. They who allow themselves to be thought of more highly than is lawful, defraud themselves of the honor which is at God's disposal [BENGEL] (Joh 5:44; Joh 12:43).
2 Corinthians 12:7
co2 12:7exalted above measure--Greek, "overmuch uplifted." How dangerous must self-exaltation be, when even the apostle required so much restraint! [BENGEL].
abundance--Greek, "the excess"; exceeding greatness.
given . . . me--namely, by God (Job 5:6; Phi 1:29).
thorn in the flesh-- (Num 33:55; Eze 28:24). ALFORD thinks it to be the same bodily affliction as in Gal 4:13-14. It certainly was something personal, affecting him individually, and not as an apostle: causing at once acute pain (as "thorn" implies) and shame ("buffet": as slaves are buffeted, Pe1 2:20).
messenger of Satan--who is permitted by God to afflict His saints, as Job (Job 2:7; Luk 13:16).
to buffet me--In Greek, present: to buffet me even now continuously. After experiencing the state of the blissful angels, he is now exposed to the influence of an evil angel. The chastisement from hell follows soon upon the revelation from heaven. As his sight and hearing had been ravished with heavenly "revelations," so his touch is pained with the "thorn in the flesh."
2 Corinthians 12:8
co2 12:8For--"concerning this thing."
thrice--To his first and second prayer no answer came. To his third the answer came, which satisfied his faith and led him to bow his will to God's will. So Paul's master, Jesus, thrice prayed on the Mount of Olives, in resignation to the Father's will. The thorn seems (from Co2 12:9, and Greek, Co2 12:7, "that he may buffet me") to have continued with Paul when he wrote, lest still he should be "overmuch lifted up."
the Lord--Christ. Escape from the cross is not to be sought even indirectly from Satan (Luk 4:7). "Satan is not to be asked to spare us" [BENGEL].
2 Corinthians 12:9
co2 12:9said--literally, "He hath said," implying that His answer is enough [ALFORD].
is sufficient--The trial must endure, but the grace shall also endure and never fail thee [ALFORD], (Deu 33:25). The Lord puts the words into Paul's mouth, that following them up he might say, "O Lord, Thy grace is sufficient for me" [BENGEL].
my strength--Greek, "power."
is made perfect--has its most perfect manifestation.
in weakness--Do not ask for sensible strength, FOR My power is perfected in man's "strengthlessness" (so the Greek). The "for" implies, thy "strengthlessness" (the same Greek as is translated "weakness"; and in Co2 12:10, "infirmities") is the very element in which My "power" (which moves coincident with "My grace") exhibits itself more perfectly. So that Paul instead of desiring the infirmity to "depart," "rather" henceforth "glories in infirmities, that the power of Christ may rest (Greek, 'tabernacle upon,' cover my infirmity all over as with a tabernacle; compare Greek, Joh 1:12) upon" him. This effect of Christ's assurance on him appears, Co2 4:7; Co1 2:3-4; compare Pe1 4:14. The "My" is omitted in some of the oldest manuscripts; the sense is the same, "power" (referring to God's power) standing absolutely, in contrast to "weakness" (put absolutely, for man's weakness). Paul often repeats the word "weakness" or "infirmity" (the eleventh, twelfth, and thirteenth chapters) as being Christ's own word. The Lord has more need of our weakness than of our strength: our strength is often His rival; our weakness, His servant, drawing on His resources, and showing forth His glory. Man's extremity is God's opportunity; man's security is Satan's opportunity. God's way is not to take His children out of trial, but to give them strength to bear up against it (Psa 88:7; Joh 17:15).
2 Corinthians 12:10
co2 12:10take pleasure in--too strongly. Rather as the Greek, "I am well contented in."
infirmities--the genus. Two pairs of species follow, partly coming from "Satan's messenger," partly from men.
when--in all the cases just specified.
strong--"powerful" in "the power of Christ" (Co2 12:9; Co2 13:4; Heb 11:34).
2 Corinthians 12:11
co2 12:11in glorying--omitted in the oldest manuscripts. "I am become a fool." He sounds a retreat [BENGEL].
ye--emphatic. "It is YE who have compelled me; for I ought to have been commended by you," instead of having to commend myself.
am I behind--rather as Greek, "was I behind" when I was with you?
the very chiefest--rather, as in Co2 11:5, "those overmuch apostles."
though I be nothing--in myself (Co1 15:9-10).
2 Corinthians 12:12
co2 12:12Truly, &c.--There is understood some such clause as this, "And yet I have not been commended by you."
in all patience, in signs, &c.--The oldest manuscripts omit "in." "Patience" is not one of the "signs," but the element IN which they were wrought: endurance of opposition which did not cause me to leave off working [ALFORD]. Translate, "IN . . . patience, BY signs," &c. His mode of expression is modest, putting himself, the worker, in the background, "were wrought," not "I wrought." As the signs have not been transmitted to us, neither has the apostleship. The apostles have no literal successors (compare Act 1:21-22).
mighty deeds--palpable works of divine omnipotence. The silence of the apostles in fourteen Epistles, as to miracles, arises from the design of those Epistles being hortatory, not controversial. The passing allusions to miracles in seven Epistles prove that the writers were not enthusiasts to whom miracles seem the most important thing. Doctrines were with them the important matter, save when convincing adversaries. In the seven Epistles the mention of miracles is not obtrusive, but marked by a calm air of assurance, as of facts acknowledged on all hands, and therefore unnecessary to dwell on. This is a much stronger proof of their reality than if they were formally and obtrusively asserted. Signs and wonders is the regular formula of the Old Testament, which New Testament readers would necessarily understand of supernatural works. Again, in the Gospels the miracles are so inseparably and congruously tied up with the history, that you cannot deny the former without denying the latter also. And then you have a greater difficulty than ever, namely, to account for the rise of Christianity; so that the infidel has something infinitely more difficult to believe than that which he rejects, and which the Christian more rationally accepts.
2 Corinthians 12:13
co2 12:13wherein you were inferior--that is, were treated with less consideration by me than were other churches.
I myself--I made a gain of you neither myself, nor by those others whom I sent, Titus and others (Co2 12:17-18).
wrong--His declining support from the Corinthians might be regarded as the denial to them of a privilege, and a mark of their spiritual inferiority, and of his looking on them with less confidence and love (compare Co2 11:9, Co2 11:11).
2 Corinthians 12:14
co2 12:14the third time--See Introduction to the first Epistle. His second visit was probably a short one (Co1 16:7), and attended with humiliation through the scandalous conduct of some of his converts (compare Co2 12:21; Co2 2:1). It was probably paid during his three years' sojourn at Ephesus, from which he could pass so readily by sea to Corinth (compare Co2 1:15-16; Co2 13:1-2). The context here implies nothing of a third preparation to come; but, "I am coming, and the third time, and will not burden you this time any more than I did at my two previous visits" [ALFORD].
not yours, but you-- (Phi 4:17).
children . . . parents--Paul was their spiritual father (Co1 4:14-15). He does not, therefore, seek earthly treasure from them, but lays up the best treasure (namely, spiritual) "for their souls" (Co2 12:15).
2 Corinthians 12:15
co2 12:15I will . . . spend--all I have.
be spent--all that I am. This is more than even natural parents do. They "lay up treasures for their children." But I spend not merely my treasures, but myself.
for you--Greek, "for your souls"; not for your mere bodies.
the less I be loved--Love rather descends than ascends [BENGEL]. Love him as a true friend who seeks your good more than your good will.
2 Corinthians 12:16
co2 12:16I did not burden you--The "I" in the Greek is emphatic. A possible insinuation of the Corinthians is hereby anticipated and refuted: "But, you may say, granted that I did not burden you myself; nevertheless, being crafty, I caught you (in my net) with guile"; namely, made a gain of you by means of others (Th1 2:3).
2 Corinthians 12:17
co2 12:17Paul's reply: You know well I did not. My associates were as distinterested as myself. An important rule to all who would influence others for good.
2 Corinthians 12:18
co2 12:18I desired Titus--namely, to go unto you. Not the mission mentioned Co2 8:6, Co2 8:17, Co2 8:22; but a mission previous to this Epistle, probably that from which he had just returned announcing to Paul their penitence (Co2 7:6-16).
a brother--rather "OUR (literally, 'the') brother"; one well known to the Corinthians, and perhaps a Corinthian; probably one of the two mentioned in Co2 8:18, Co2 8:22.
2 Corinthians 12:19
co2 12:19Again--The oldest manuscripts read, "This long time ye think that we are excusing ourselves unto you? (Nay). It is before God (as opposed to 'unto you') that we speak in Christ" (Co2 2:17). English Version Greek text was a correction from Co2 3:1; Co2 5:12.
2 Corinthians 12:20
co2 12:20For--Assigning cause why they needed to be thus spoken to "for their edification"; namely, his fear that at his coming he should find them "not such as he would," and so he should be found by them "such as they would not" like, namely, severe in punishing misconduct.
debates--Greek, "strifes," "contentions."
envyings--The oldest manuscripts read "envying," singular.
strifes--"factions," "intrigues," "factious schemes" [WAHL]. Ambitious self-seeking; from a Greek root, "to work for hire."
backbitings, whisperings--open "slanderings," and "whispering backbitings" (Gal 5:20).
swellings--arrogant elation; puffing up of yourselves. Jde 1:16, "great swelling words" (Pe2 2:18).
2 Corinthians 12:21
co2 12:21my God--his God, however trying the humiliation that was in store for him.
will humble me--The indicative implies that the supposition will actually be so. The faithful pastor is "humbled" at, and "bewails" the falls of his people, as though they were his own.
sinned already--before my last coming [BENGEL], that is, before the second visit which he paid, and in which he had much at Corinth to rebuke.
have not repented--shall not have repented [ALFORD].
uncleanness--for example, of married persons (Th1 4:7).
fornication--among the unmarried.