The interpretation timeline
1 Thessalonians 3:5 Douay-Rheims

For this cause also, I, forbearing no longer, sent to know your faith: lest perhaps he that tempteth should have tempted you, and our labour should be made vain.

A.D. 407 – 1871 5 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"For this cause I also, when I could no longer forbear, sent that I might know your faith, lest by any means the tempter had tempted you, and our labor should be in vain." A Question lies before us to-day, which is much disputed, and which is gathered from many sources. But what is this question? "For this cause," he says, "when I could no longer forbear, I sent Timothy that I might know your faith." What sayest thou? He, who knew so many things, who heard unutterable words, who ascended even to the third heaven, doth not he know, even when he is in Athens? And yet the distance is not great, nor has he been long parted from them. For he says, "Being bereaved of you for a short season." He does not know the affairs of the Thessalonians, but is compelled to send Timothy to know their faith, "lest," he says, "the tempter had tempted you, and our labors should be in vain." What then is one to say? That the Saints knew not all things. And this one might learn from many instances, both of the early ones, and of those who came after them. And this comes to pass out of great care on God's part. How, and in what way? For the sake both of the Saints themselves, and of those who believe in them. For as He permits that there should be persecutions, so He permits that they should also be ignorant of many things, that they may be kept humble. What means, "Lest by any means the tempter had tempted you"? Dost thou see that to be shaken in afflictions proceeds from the devil, and from his seduction? For when he cannot shake us ourselves, he takes another way, and shakes the weaker sort through our means. "And our labor," he says, "should be in vain." Wherefore! for even if they were turned aside, it was not through thy fault, not through thy negligence. But nevertheless, though this were the case, I think, from my great love of the brethren, that my labor had been rendered vain. "Lest by any means the tempter had tempted you." But he tempts, not knowing whether he shall overthrow. Does he then, even though he knows not, yet assail us, and do we, who know that we shall completely overcome him, not watch? Let us all hear, how Paul labored. He does not say work, but "labor"; he does not say, and you be lost, but "our labor." So that even if anything had happened, it would be happening with some reason. But that it did not happen was a great wonder. These things indeed we expected, he says, but the contrary happened. For not only did we receive from you no addition to our affliction but even consolation.”
Source

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“He commemorated the tribulations they had suffered, and the remedy he proposed to offer them; here he shows how he had come to their aid by visiting through Timothy. And first he treats of the sending of the messenger; second, of the report made through him, at *but now*; third, of the effect of the report on the apostle, at *therefore we were comforted*. Likewise the first is divided into three, because first he sets forth the cause why he sent him; second, of what sort he sent; third, the cause on account of which he sent him. He says therefore *wherefore*, that is, because Satan hindered us, yet you are our glory; therefore not enduring the weight of love inclining toward you. Is. 1:14: they have become troublesome to me, etc. Gen. 45:1: he could not restrain himself any longer. *It pleased us*, namely Paul and Silvanus, *to remain at Athens alone, and we sent Timothy*, because he was most fitting for the apostle. Phil. 2:20: I have no one so like-minded, who with sincere affection is solicitous for you. 1 Cor. 4:17: I have sent to you Timothy, who is my most dear and faithful son in the Lord. *Brother*, through charity assisting. Prov. 18:19: a brother who is helped by a brother is like a strong city. *And minister*. It is the dignity of the Church. 2 Cor. 11:23: they are ministers of Christ, and I, etc. He sends him, moreover, to confirm them and to report back to himself. Then when he says *to confirm*, etc., he shows that he is sent to confirm. And first he does this; second, the reason for the confirmation is given, at *for you yourselves*. He says therefore *to confirm you and to exhort you*, because through exhortations a man's spirit is confirmed. Job 4:4: your words have confirmed those who were wavering. Lk. 22:32: and thou, once converted, confirm thy brethren. And you need to be exhorted for your faith, that no one be moved in these tribulations. Ecclus. 10:4: if the spirit of one having power ascend over thee, leave not thy place. There is, moreover, a twofold reason of confirmation. One from divine ordination: *for you yourselves know*, etc., as if to say: thus God willed, that through tribulations you should enter into heaven. Acts 14:22: through many tribulations you must enter into the kingdom of God, and 2 Tim. 3:12: all who wish to live piously in Christ Jesus shall suffer persecution. By this way Christ went. Lk. ult.: it behooved Christ to suffer and to rise, and thus to enter into his glory. The other reason is on the part of foretelling, because things foreseen strike less. Whence he says *for also when we were with*, etc., that is, because I foretold to you the tribulations which you have suffered in these years, *I sent to know*, etc., namely how firm you were in the faith. Prov. 27:23: diligently know the countenance of thy cattle, and consider thy flocks. *He who tempts*, namely the Devil. Matt. 4:3: the tempter approaching, Gloss: whose office it is to tempt. But against this: the world and the flesh tempt. Jas. 1:14: everyone is tempted by his own concupiscence, etc. Likewise Gen. 22:1: God tempted Abraham, etc. I answer. To tempt is to take a trial of something. In this it must be considered to what end he wishes to take it, and how. For this happens in two ways: either that he himself may know, or that he may cause another to know. In the first way God does not tempt, for he himself knows what is in man, Jn. 2:25. In the second way thus: for God tempted Abraham, namely that others might know his faith. But in the first way, to tempt happens in two ways, namely that he may promote to good, as a bishop examines those to be promoted; or someone tempts in order to deceive, and this is of the Devil, because namely he inquires into the condition of men, so that according to their diverse conditions he may lead them to the diverse vices to which they are prone. 1 Pet. 5:8: your adversary the Devil, etc. His office therefore is to tempt in order to deceive. The world and the flesh, however, are said to tempt materially, because through those things to which they themselves incline, a trial is taken of a man, whether he be firm toward the commandments of God and toward love. For if concupiscence should conquer, he does not perfectly love God. And likewise when the things of the world either terrify or affect him. *And in vain*, because if you do not resist temptation, your labor would be in vain. Gal. 4:11: I fear for you, lest perhaps I have labored among you without cause. Ez. 18:24: all his righteous deeds which he has done shall not be remembered. It is called *in vain*, however, with respect to the eternal reward; yet the good works done before a sin committed avail for something, because after repentance they revive, and one is disposed more easily to conversion. Then when he says *but now*, etc., he shows how Timothy reported their good things pertaining to God and to the apostle: to God, faith and charity. Gal. 6:15: in Christ Jesus, neither circumcision avails anything, nor uncircumcision, but a new creature. But faith, also to the apostle; whence he says *and that you have remembrance*. Ecclus. 49:1: the memory of Josias is like the composition of a work made, the work of the perfumer, etc. Prov. 10:7: the memory of the just is with praises, etc. *Desiring to see us, as we also you*. Augustine: hard is the mind which, when it does not wish to bestow love, refused even to return it. Is. 51:2: look unto Abraham your father, etc. Then when he says *therefore we were comforted*, a threefold effect of the report is set forth, namely of spiritual consolation, of thanksgiving, at *for what*, and of multiplied prayer, at *night*. He says therefore: because we have heard such things of you, although temporal necessities and bodily tribulations are pressing, yet *we were comforted*. Ps. 93:19: according to the multitude of my sorrows in my heart, thy comforts have gladdened my soul, etc. 2 Cor. 1:3: blessed be God and the Father of our Lord Jesus Christ, the Father of mercies, and the God of all comfort, etc. And this *through your faith*, that is, hearing the firmness of your faith, *because we live*, etc. As if to say: I so love your state, that I reckon myself to live through it. Gen. 45:28: it is enough for me if my son Joseph yet lives. Then when he says *for what*, etc., the second effect of the report made is set forth, namely thanksgiving; as if to say: I am not sufficient to render any worthy thanksgiving to God for you. Mich. 6:6: what worthy thing shall I offer to the Lord, etc. Ps. 115:12: what shall I render to the Lord for all, etc. Thanksgivings are, however, to be referred *in all the joy*, which is altogether not exterior, but *with which we rejoice on account of you*, in conscience, *before our God*, who sees it. Or *before our God*, because it pleases God concerning one's neighbor. 1 Cor. 13:6: rejoices with the truth, etc. Then when he says *night*, etc., the third effect of the report is set forth, and first he sets forth the multiplicity of the prayer, second he shows what he prays for in praying, at *but himself*, etc. He says therefore: we give thanks for things past, yet we do not fail to pray for things future, indeed *night and day*, that is, in adversity and prosperity. Ps. 54:18: evening and morning and at noon I will declare, etc. *What is lacking*, etc. Not indeed those things which were of the necessity of faith, but certain secret things, which the apostle had not yet preached to them in their newness. 1 Cor. 3:1: I could not speak to you as to spiritual men, but as to carnal, etc. Jn. 16:12: I have many things to say to you, which not, etc. Then when he says *but may God himself*, etc., he shows what he prays for them. And concerning this he first shows what he asks, at *to confirm*. He asks, moreover, two things: one on his own part, that he might be able to go to them. Whence he says *may he himself, God and our Father*, etc. Jn. 20:17: I ascend to my Father and your Father, etc. Prov. 16:1: it is man's part to prepare the mind, but the Lord's to govern the tongue. The other on their part. Whence he says *but you may he multiply*, namely in faith. 2 Kings 24:3: may the Lord add to his people a hundredfold as many as they are, etc. And that merits may be increased. Whence he says *and may he make your charity abound*, which can always increase along the way. Col. 3:14: above all things have charity, which is the bond of perfection. And first, *toward one another*; second, *toward all*. Gal. 6:10: let us work good toward all, but especially toward those of the household of the faith. And he sets an example from himself, saying *as*, etc., as if to say: as I also love you. 2 Cor. 7:3: you are in our hearts, to die together and to live together. But to what end does he ask this? *To confirm your hearts without blame*, that is, that no one may be able to complain of you. Lk. 1:6: walking in all the commandments and justifications without blame. *And in holiness before God*, namely who sees the heart. Lk. 1:75: in holiness and justice before him, etc. And this appears *at the coming of our Lord Jesus Christ*, that he may find you holy; which coming will be *with all his saints*, that is, may you be in his sight, just as all the saints are before him.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“For this cause, when I could no longer forbear,.... Or "bear" the above vehement desire of seeing them, or of hearing from them. Here the apostle speaks in the singular number, and seems to intimate, as if what was said before of the like kind is to be understood singly of him; for these words are a repetition and summary of the foregoing, with some diversity: I sent to know your faith; how it stood, whether it was staggering through these afflictions, or firm; whether it was weak or strong, what was wanting in it; and whether it grew and increased. The Arabic version adds, "and charity"; for of this, as well as of faith, Timothy brought an account, as appears from the following verse. Lest by some means the tempter; Satan, so called from his common and constant employ in tempting men to sin; see Mat 4:3 have tempted you with success, and got an advantage over them, improving these afflictions to such a purpose as to move them from the hope of the Gospel, and relinquish the profession of it; for otherwise there was no question to be made but he had tempted them, or solicited them to it; for none of the saints are free from his temptations; the apostle himself was not, nor indeed our Lord Jesus Christ: but the apostle's fears were, lest he should so have tempted them as to have gained upon them, and have persuaded them to have turned their backs upon the Gospel, and not expose their name and credit, and hazard the toss of worldly substance, and even life itself, for the sake of it. And our labour be in vain: in preaching the Gospel among them; not with respect to God, to whom the word never returns void and empty; nor with regard to the apostles, whose judgment was with the Lord, and their work with their God, who will of his own grace reward them; but with respect to the Thessalonians, to whom, should Satan gain his point, it would be of no use and service, for which the concern was. The Ethiopic version reads, "and your labour be in vain": in receiving the apostles, embracing and professing the Gospel, and suffering for it; see Gal 3:4 but the common reading is best, and agrees with what the apostle elsewhere says, Gal 4:11.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“For this cause - Knowing that you would be persecuted, and knowing that your apostasy was possible, I sent to know your faith - whether you continued steadfast in the truth, lest you might have been tempted by Satan to consult your present ease, and abandon the Gospel, for which you suffered persecution.”
1871
A.D.
1871
“For this cause--Because I know of your "tribulation" having actually begun (Th1 3:4). when I--Greek, "when I also (as well as Timothy, who, Paul delicately implies, was equally anxious respecting them, compare "we," Th1 3:1), could no longer contain myself (endure the suspense)." I sent--Paul was the actual sender; hence the "I" here: Paul, Silas, and Timothy himself had agreed on the mission already, before Paul went to Athens: hence the "we," (see on Th1 3:1). to know--to learn the state of your faith, whether it stood the trial (Col 4:8). lest . . . have tempted . . . and . . . be--The indicative is used in the former sentence, the subjunctive in the latter. Translate therefore, "To know . . . whether haply the tempter have tempted you (the indicative implying that he supposed such was the case), and lest (in that case) our labor may prove to be in vain" (compare Gal 4:11). Our labor in preaching would in that case be vain, so far as ye are concerned, but not as concerns us in so far as we have sincerely labored (Isa 49:4; Co1 3:8).”
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.