The interpretation timeline
1 Thessalonians 2:9 Douay-Rheims

For you remember, brethren, our labour and toil: working night and day, lest we should be chargeable to any of you, we preached among you the gospel of God.

A.D. 407 – 1871 6 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“The teacher ought to do nothing with a feeling of being burdened, that tends to the salvation of his disciples. For if the blessed Jacob was buffeted night and day in keeping his flocks, much more ought he, to whom the care of souls is entrusted, to endure all toils, though the work be laborious and mean, looking only to one thing, the salvation of his disciples, and the glory thence arising to God. See then, Paul, a man that was a Preacher, an Apostle of the world, and raised to so great honor, worked with his hands that he might not be burdensome to his disciples. "For ye remember," he says, "my brethren, our labor and travail." He had said previously, "we might have been burdensome as the Apostles of Christ," as he also says in the Epistle to the Corinthians, "Know ye not that they which minister about sacred things eat of the things of the Temple? Even so also did Christ ordain that they which proclaim the Gospel should live of the Gospel." (1 Cor. ix. 13, 14) But I, he says, would not, but I labored; and he did not merely work, but with much diligence. Observe then what he says; "For ye remember," he has not said, the benefits received from me, but, "our labor and travail: for working night and day, that we might not burden any of you, we preached unto you the Gospel of God." And to the Corinthians he said a different thing, "I robbed other Churches, taking wages of them that I might minister unto you." (2 Cor. xi. 8) And yet even there he worked, but of this he made no mention, but urged what was more striking, as if he had said, I was maintained by others when ministering to you. But here it is not so. But what? "Working night and day." And there indeed he says, "And when I was present with you, and was in want, I was not a burden on any man," and, "I took wages that I might minister unto you." (2 Cor. xi. 8, 9) And here he shows that the men were in poverty, but there it was not so.”
Source
523
A.D.
c. A.D. 450–523
“And to how much in want and poverty he was testify the fact that once until he had sold his clothing they were not able to buy food for him and for those who were with him, and the constant labour which he did with his hands at nights, in order that he might be a burden upon no man.”

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“Above he commended them because they received the word of God in tribulations; here he commends them because they did not withdraw from him on account of tribulations. And concerning this he does three things: first he recalls their tribulations; second he shows what remedy he applied for them, in chapter III, at the words "for which cause"; third, why, at the words "because now we live." But because he had said above, concerning them, that the apostle's entrance toward their conversion was reported by all, therefore he first treats of his own entrance; second, of their conversion, at "therefore we also give thanks." Concerning the first he does three things: first he recalls his own constancy, which he had before he came to them; second, the sincerity of the teaching by which he converted them, at "for our exhortation"; third, the sincerity of his conduct with those converted, at "for you." Again, the first is divided into two: first he sets forth the tribulations which he suffered before he came to them; second, how he did not lose confidence on this account, at "we had confidence." He says therefore: I say that he announces our entrance, which you also know, that it was not vain, etc., that is, light, but difficult, because it was through many tribulations. Or "not vain," that is, empty, but full. Gen. 1:2: the earth was void and empty, etc. Or "not vain," that is, unstable, but firm. Phil. 2:17: I have not run in vain, nor labored in vain. But we suffered bodily sufferings before. Prov. 19:11: the teaching of a man is known through patience. Ps. 91:15: they shall be well enduring, that they may proclaim. Likewise spiritual [sufferings], because on this account he was afflicted with insults in Philippi, where on account of the healing of the pythoness he suffered tribulations. And this city is of Macedonia. Nor yet on account of these things was the confidence of preaching extinguished. Is. 12:2: behold, God is my savior, I will act with confidence, and I will not fear. And this confidence was to preach to you the Gospel of God in much solicitude concerning your conversion. Rom. 12:8: he who is over others, with solicitude. II Cor. 11:28: besides those things that are from without, my daily pressure, the solicitude of all the churches. Then, when he says "exhortation," he shows the sincerity of his preaching. And concerning this he does two things: first he proves the sincerity of his teaching; second he explains certain things he had said, at "not as to men." Concerning the first he does two things: first he excludes the corruption of the teaching; second he sets down the sincerity, at "but as approved." Now teaching is corrupted either on account of the matter which is taught, or on account of the intention of the one teaching. On account of the first, teaching is corrupted in two ways, namely either through error, as one teaching that salvation is through Christ together with the legal observances. II Tim. 3:13: evil men and seducers shall grow worse, erring, and sending others into error. Therefore he says: "for our exhortation is not," as that of some, "of error." Or on account of uncleanness, as those who say that one ought to give oneself over to pleasures, which teaching is from a certain Nicolaus, who permitted promiscuous marriages, sharing his wife with another; therefore he says, "nor of uncleanness." Apoc. 2:20: you permit the woman Jezebel, who calls herself a prophetess, to teach and seduce my servants to fornicate, and to eat of things sacrificed to idols, etc. Job 6:30: you shall not find iniquity in my tongue. Likewise, the exhortation is not in guile as that of some, who, although they speak the truth, nevertheless have a corrupt intention, because they seek not the profit of their hearers nor the honor of God, but their own honor. Against which he says, "nor in guile." Jer. 9:8: their tongue is a wounding arrow, it has spoken guile, etc. His preaching, therefore, is not corrupt, but sincere. Now a thing is sincere which preserves its own nature. But preaching is then sincere, when someone teaches with that same tenor and end with which Christ taught. And therefore he says, "but as approved," that is, we speak in that manner and with that intention with which God chose and approved us to preach the Gospel. Gal. 2:7: the Gospel of the uncircumcision was entrusted to me, as that of the circumcision to Peter. Acts 9:15: this man is a vessel of election to me, to carry my name before the Gentiles, and kings, and the sons of Israel. Then, when he says "not as to men," etc., he shows that his preaching is not in guile. First excluding that on account of which it might seem to be deceitful; second he makes it clear through a sign, at "nor at any time"; third through a cause, at "nor on occasion." On account of the first he says: my preaching is not as pleasing men, namely, finally. Ps. 52:6: the bones of those who please men have been scattered. Gal. 1:10: if I pleased men, I would not be the servant of Christ. Sometimes, however, they ought to wish to please men for the glory of God, that preaching may bear more fruit, as is said I Cor. 10:33: I please all men in all things, etc. But God, etc. Prov. 16:2: all the ways of man are open to his eyes. Now the sign of this is that we did not flatter, speaking to them pleasing things. Is. 30:10: speak to us pleasing things, see for us errors, etc. Prov. 24:28: do not flatter anyone with your lips, etc. And he shows the same thing through a cause. For on account of two things does someone seek to please men, namely either for the sake of benefits, or for the sake of glory. But this he excludes here, and first, the first, saying, "nor were we," etc. Because we avoid not only flattery, but also every occasion of avarice. I Tim. 6:5: supposing gain to be godliness. Jer. 6:15: for from the least even to the greatest, all are devoted to avarice. Second, the second, at "nor seeking glory from you nor from others," concerning the teaching, since we might have gloried and received — rather, to be a burden, because they owed him glory and support; whence he says, "since we could." And he calls it a burden, because those preaching to them perversely sought these things from them beyond measure. Is. 3:14: for you have devoured my vineyard, etc. Then, when he says "but we became," etc., he makes clear these two things: first, that he does not seek human glory; second, that neither [does he seek] occasion for avarice, at "for you remember." Concerning the first he does two things: for first he shows his humility; second, under a likeness, he shows his solicitude, at "as if a nurse." He sets down, therefore, the first, saying that "we became little ones," etc., that is, humble. Ecclus. 32:1: have they made you a ruler? Do not be lifted up, but be among them as one of them. This he shows in a likeness, saying "as if a nurse," who, namely, condescends to an infant, speaking to it with stammering, that the child may learn to speak, and in gestures also condescends to it. I Cor. 9:22: I have become all things to all. I Cor. 3:1: as to little ones in Christ, I gave you milk to drink, not food. Even souls. John 10:11: the good shepherd gives his soul for his sheep, etc. Because most dear, etc. II Cor. 12:15: but I will most gladly spend, and be spent myself, for your souls, etc. Then, when he says "for you remember," he shows, second, what he had said above, namely, likewise, "nor by occasion of avarice," because we took nothing from you, but from labor, because "of labor," etc. And some indeed labor, but with comfort; but we did not, but with toil. Therefore he says "of our labor," not for the exercise of the body, but with fatigue. Whence he says "and of fatigue." Some also labor by day, but we, "night and day." For by this he wished to restrain the false [preachers], who received too much, and on account of the idle among them. I Cor. 4:12: we labor, working with our own hands, etc. Then, when he says "for you are," he sets forth the purity of his conduct, and first, how holy, with regard to life; second, how solicitous, with regard to teaching, at "how each one." He says therefore: you know how holily, that is, purely. Lev. 11:44 and 19:2: be holy, because I am holy. Justly, with regard to one's neighbor. Titus 2:12: let us live soberly, and justly, and piously in this age. Without complaint, to you who have believed, that is, from the time you believed, doing nothing whereby anyone could scandalize each one of you individually. Note that individual preaching sometimes avails much. As a father. I Cor. 4:15: in Christ Jesus, through the Gospel, I have begotten you. Beseeching. Philem. 8: having much confidence in Christ Jesus to command you what pertains to the matter, on account of charity I rather beg. And consoling, through gentle words. Against which it is said, Ezek. 34:4: with austerity you commanded them, with power. Is. 61:2: that I might console all who mourn, and grant consolation to those who mourn in Sion. And what did you preach? That worthily, that is, that your conduct might be such as befits the ministers of Christ. Col. 1:10: that you walk worthily of God, pleasing him in all things. Of God, who, etc. Wis. 6:21: therefore the desire of wisdom leads to the everlasting kingdom.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“For ye remember brethren, our labour and travail,.... The great pains they took, even to weariness. The Vulgate Latin version renders the last word, "weariness"; and the Arabic version, "anxiety"; and the Ethiopic version, "affliction"; it is to be understood both of corporeal and spiritual labour, working with their hands and preaching the Gospel; this could not but be remembered by them, since it was not a year ago they were with them: for labouring night and day; at our handicraft, or "at the work of our hands", as the Syriac version renders it; which they continually attended to, even night and day, when they were not preaching the Gospel, or disputing with the Jews, or praying and conversing with those that believed, or refreshing themselves with food and rest. The apostle's business was making of tents; see Gill on Act 18:3, because we would not be chargeable to any of you; neither to the whole body, nor to any single person; which shows that they did not seek their own ease and worldly interest; and proves what is before asserted, that they did not use a cloak of covetousness, but chose to forego, and not insist on what they had a right to, lest the Gospel should be hindered or reproached: we preached unto you the Gospel of God; freely and with great application and diligence; for this is the other part of their labour and travel; for the ministry of the word is a work, and a laborious one, when closely attended to; a preparation for it by prayer, reading, meditation, and much study, are wearisome and fatiguing; and to preach the word in season and out of season, with all longsuffering and doctrine, is very laborious; to which no man is sufficient of himself, and is a work which requires great faithfulness, application, and industry; and is oftentimes made the more heavy through the malice and opposition of enemies, and the weakness of friends.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Ye remember - our labor and travail - From this it appears that St. Paul spent much more time at Thessalonica than is generally supposed; for the expressions in this verse denote a long continuance of a constantly exercised ministry, interrupted only by manual labor for their own support; labouring night and day, because we would not be chargeable to you. Probably Paul and his companions worked with their hands by day, and spent a considerable part of the night, or evenings, in preaching Christ to the people.”
Source
1871
A.D.
1871
“labour and travail--The Greek for "labor" means hardship in bearing; that for "travail," hardship in doing; the former, toil with the utmost solicitude; the latter, the being wearied with fatigue [GROTIUS]. ZANCHIUS refers the former to spiritual (see Th1 3:5), the latter to manual labor. I would translate, "weariness (so the Greek is translated, Co2 11:27) and travail" (hard labor, toil). for--omitted in the oldest manuscripts. labouring--Greek, "working," namely, at tent-making (Act 18:3). night and day--The Jews reckoned the day from sunset to sunset, so that "night" is put before "day" (compare Act 20:31). Their labors with their hands for a scanty livelihood had to be engaged in not only by day, but by night also, in the intervals between spiritual labors. because we would not be chargeable--Greek, "with a view to not burdening any of you" (Co2 11:9-10). preached unto you--Greek, "unto and among you." Though but "three Sabbaths" are mentioned, Act 17:2, these refer merely to the time of his preaching to the Jews in the synagogue. When rejected by them as a body, after having converted a few Jews, he turned to the Gentiles; of these (whom he preached to in a place distinct from the synagogue) "a great multitude believed" (Act 17:4, where the oldest manuscripts read, "of the devout [proselytes] and Greeks a great multitude"); then after he had, by labors continued among the Gentiles for some time, gathered in many converts, the Jews, provoked by his success, assaulted Jason's house, and drove him away. His receiving "once and again" supplies from Philippi, implies a longer stay at Thessalonica than three weeks (Phi 4:16).”
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.