The interpretation timeline
2 Corinthians 1:4 Douay-Rheims

Who comforteth us in all our tribulation; that we also may be able to comfort them who are in all distress, by the exhortation wherewith we also are exhorted by God.

A.D. 395 – 1871 7 witnesses

Patristic

before A.D. 750
395
A.D.
Gregory of Nyssa Patristic
c. A.D. 335–395
“But what does it mean to say that the kingdom of God is within us? What else than the gladness which comes from on high to souls through the Spirit? For this is like an image and a deposit and a pattern of everlasting grace which the souls of the saints enjoy in the time which is to come. So the Lord summons us through the activity of the Spirit to salvation through our afflictions and to a sharing in the goods of the Spirit and his own graces. For he says: "Who comforts us in our afflictions, that we also may be able to comfort those who are in any distress."”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"Who comforteth us in all our affliction, that we may be able to comfort them that are in any affliction through the comfort wherewith we ourselves are comforted of God." And observe, I pray you, herein also the lowly-mindedness of Paul. For though he were in peril because of the Gospel he preached; yet saith he not, he was saved for his merit, but for the mercies of God. But this he afterwards declareth more clearly, and now goes on to say, "Who comforteth us in all affliction." He saith not, "Who suffereth us not to come into affliction:" but, "Who comforteth in affliction." For this at once declareth the power of God; and increaseth the patience of those afflicted. For, saith he, "tribulation worketh patience." And so also the prophet, "Thou hast set me at large when I was in distress." He doth not say, "Thou hast not suffered me to fall into affliction," nor yet, "Thou hast quickly removed my affliction," but, whilst it continueth, "Thou hast set me at large:" that is, "hast granted me much freedom and refreshment." Which truly happened also in the case of the three children, for neither did He prevent their being cast into the flame, nor when so cast, did He quench it, but while the furnace was burning He gave them liberty. And such is ever God's way of dealing; as Paul also implies when he says, "Who comforteth us in all affliction." But he teaches something more in these words: Do you ask what? Namely, that God doeth this not once, nor twice, but without intermission. For He doth not one while comfort, another not, but ever and constantly. Wherefore he saith, "Who comforteth," not, "Who hath comforted," and, "in all affliction," not, "in this or that," but, "in all." "That we may be able to comfort them which are in any affliction through the comfort wherewith we ourselves are comforted of God." See you not how he is beforehand with his defence by suggesting to the hearer the thought of some great affliction; and herein also is his modesty again apparent, that he saith not for their own merits was this mercy showed, but for the sake of those that need their assistance; "for," saith he, "to this end hath He comforted us that we might comfort one another." And hereby also he manifesteth the excellency of the Apostles, shewing that having been comforted and breathed awhile, he lieth not softly down as we, but goeth on his way to anoint, to nerve, to rouse others.”
Source

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“Here begins the epistle, in which the Apostle does two things. For first he excuses himself for not having gone to them, as he had promised; second, he pursues his intention, in chapter 3, where he says "we begin again," etc. Concerning the first he does two things. First he sets down his excuse for the delay; second he assigns the cause of the delay, in the second chapter, where he says "but I determined," etc. Concerning the first he does two things. First he renders them well disposed; second he sets forth his excuse, where he says "and with this confidence," etc. Concerning the first he does two things. First he wins their goodwill by relating certain things in general; second, certain things in particular, where he says "for not," etc. Now the Apostle wins their goodwill by showing that whatever he does, he does it all for their benefit. And concerning this he does two things. First he sets forth beforehand the benefit that comes to others from him; second he assigns the reason for these things, where he says "for as they abound," etc. Concerning the first he does three things. First the act of thanksgiving is set down; second the manner of the thanksgiving, where he says "who comforts," etc.; third the cause, where he says "that we also may be able to comfort." He gives thanks, therefore, to the whole Trinity, from whom every good comes. And so he says "blessed be God," that is, the whole Trinity. Likewise to the person of the Father, when he says "and the Father of our Lord Jesus Christ," through whom, namely Christ, the Father has given us all things. But it should be known that we bless God, and God blesses us, but in different ways. For God's speaking is his doing. Ps. 32:9: "He spoke, and they were made." Hence God's blessing is to do good and to pour in good, and thus it has the character of causality. Gen. 1:28, and 22:17: "Blessing I will bless you," etc. But our speaking is not causal, but recognitive or expressive. Hence our blessing is the same as recognizing the good. When therefore we give thanks to God, we bless him, that is, we recognize him as good and as the giver of all goods. Tob. 12:6: "Bless the God of heaven," etc. Dan. 3:57: "Bless, all ye works," etc. Rightly, therefore, he gives thanks to the Father, because he is merciful, hence he says "Father of mercies," and because he is a comforter, hence he says "and God of all comfort." And he gives thanks for two things, of which men have the greatest need. For first they need evils to be taken away from them, and this mercy does, which takes away misery; and to have mercy is proper to a father. Ps. 102:13: "As a father has mercy on his children," etc. Second they need to be sustained in the evils that come upon them. And this is properly to be comforted, because unless a man had something in which his heart might rest, when evils came upon him, he would not endure. Then, therefore, someone comforts another, when he brings him some refreshment, in which he may rest amid evils. And although in some evils a man can be comforted and rest and be sustained by something, still God alone is he who comforts us in all evils. And therefore he says "God of all comfort"; because if you sin, God comforts you, because he himself is merciful. If you are afflicted, he comforts you, either by rescuing you from the affliction through his power, or by judging through his justice. If you labor, he comforts you by rewarding, Gen. 15:1: "I am your reward," etc. And therefore it is said, Matth. 5:5: "Blessed are they that mourn," etc. But he adds the matter of the thanksgiving, saying "who comforts," etc. As if he were to say: therefore blessed, because he comforts us in all tribulation. Below, 7:6: "who comforts," etc. But he sets down the cause of this, when he says "that we also may be able to comfort." Here it should be noted that there is an order in the divine gifts. For God gives special gifts to some for this purpose, that they may pour them out for the benefit of others. For he does not give light to the sun, that it may shine for itself alone, but for the whole world. Hence he wills that from all our goods, whether they be riches, or power, or knowledge, or wisdom, some benefit should accrue to others. 1 Pet. 4:10: "As every man has received grace," etc. This, therefore, is what the Apostle says: "he comforts us in all tribulation." But why? Not that this alone should be for our good, but also that it may benefit others. Hence he says "that we also may be able to comfort them," etc. For we can comfort others by the example of our own comfort. For he who has not been comforted does not know how to comfort. Ecclus. 34:11: "He who has not been tempted, what does he know?" "Who are in all" - that is, in whatever distress. Is. 61:1f.: "The spirit of the Lord has sent me," etc., "that I might comfort all who mourn," etc.; Ecclus. 48:27: "he comforted them that mourn," etc. We can, I say, comfort by exhortation to the endurance of sufferings, promising eternal rewards, by which, namely, we exhort you through the Scriptures and interior inspirations, that we may patiently endure, and exhort others by our example, and through the Scriptures themselves. 1 Cor. 11:23: "For I have received of the Lord," etc. Is. 21:10: "What I have heard from the Lord," etc. Having set down the benefit that comes from the apostles to others, he consequently assigns the reason for what has been said, saying "for as they abound," etc. And because he had said two things, namely that God comforts us in all tribulation, and that we also may, etc., here he explains the reason for these two things, and first he shows how God comforts us in all tribulation; second, how our comfort is turned into the comfort of others, where he says "but whether we are in tribulation," etc. He says, therefore: rightly I say that he comforts us in all our tribulation, because according as the sufferings of Christ abound in us, etc. He says "of Christ," that is, begun by Christ. Ez. 9:6: "Begin at my sanctuary." For in Christ the sufferings for our sins began, because he himself bore our sins in his body upon the tree, 1 Pet. 2:24, then through the apostles, who said "we are put to death all the day," Ps. 43:22, etc., then through the martyrs, who "were cut asunder, were tempted," etc., Heb. 11:37; lastly the sinners themselves will patiently bear the wrath of the Lord for their own sins, because they have sinned against him. Or, "sufferings of Christ," that is, those which we endure on account of Christ: Acts 5:41: "the apostles went rejoicing," etc. And Ps. 43:22: "For your sake we are put to death," etc. As, I say, sufferings of this kind abound, so through Christ our comfort abounds. Ps. 93:19: "According to the multitude of my sorrows," etc.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Who comforteth us in all our tribulation,.... The apostle in this verse gives a reason of the former thanksgiving, and at the same time confirms the above character of God, as "the God of all comfort", by his own experience, and that of his fellow ministers; who, though they had been in great tribulation and affliction for the sake of Christ, and his Gospel, yet were not left destitute of divine help and support under their trials; but had much consolation and sweet refreshment administered to them by the presence of God with them, the application of his promises to them, the shedding abroad of his love in them, and the fellowship and communion they enjoyed with Father, Son, and Spirit. The end of this, or why God was pleased to comfort them in such a manner, was not so much on their own account; though it showed that they were loved, and not hated and rejected of God, but for the good of others: that we may be able to comfort them which are in any trouble, by the comfort wherewith we ourselves are comforted of God; many are the troubles and afflictions of the saints in this life, but it is the will of God that they should be comforted: and the persons he employs and makes use of in this way are his ministering servants, whose principal work and business it is to speak comfortably to the people of God; see Isa 40:1, and that they may be able to do so, that they may be fitted and furnished for so good a work, they are blessed with a rich experience of divine consolation in themselves, under the various troubles and exercises they are attended with in the course of their ministry; and such persons are, of all others, the fittest, and indeed the only proper persons to speak a word in season to weary souls.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Who comforteth us - Who shows himself to be the God of tender mercy, by condescending to notice us, who have never deserved any good at his hand; and also the God of all consolation, by comforting us in all our tribulation - never leaving us a prey to anxiety, carking care, persecution, or temptation; but, by the comforts of his Spirit, bearing us up in, through, and above, all our trials and difficulties. That we may be able to comfort them - Even spiritual comforts are not given us for our use alone; they, like all the gifts of God, are given that they may be distributed, or become the instruments of help to others. A minister's trials and comforts are permitted and sent for the benefit of the Church. What a miserable preacher must he be who has all his divinity by study and learning, and nothing by experience! If his soul have not gone through all the travail of regeneration, if his heart have not felt the love of God shed abroad in it by the Holy Ghost, he can neither instruct the ignorant nor comfort the distressed. See Co2 1:6.”
Source
1849
A.D.
1774–1849
“Wherewith we also are exhorted by God. The Latin interpreter sometimes translates the same Greek word by exhorted, sometimes by comforted: so the sense may be, with which we are comforted by God. (Witham) — St. Paul knew that his former letter had afflicted them exceedingly; here he comforts them by telling them that God had filled him with consolation in order to comfort them. The Greek rather signifies, by the consolation with which we are comforted. Either explanation is sufficiently clear, though the latter is stronger. We may here remark the great tenderness St. Paul had for the Corinthians, since he here insinuates that he had received comfort from God merely to communicate it to them. (Calmet)”
Source
1871
A.D.
1871
“us--idiomatic for me (Th1 2:18). that we may . . . comfort them which are in any trouble--Translate, as the Greek is the same as before, "tribulation." The apostle lived, not to himself, but to the Church; so, whatever graces God conferred on him, he considered granted not for himself alone, but that he might have the greater ability to help others [CALVIN]. So participation in all the afflictions of man peculiarly qualified Jesus to be man's comforter in all his various afflictions (Isa 50:4-6; Heb 4:15).”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.