Knowing what? How “we showed ourselves among you”? Here he also touches upon his own good actions, but covertly. For he wishes first to enlarge upon their praises, and what he says is something of this sort. I knew that you were men of great and noble sort, that you were of the Elect. For this reason we also endure all things for your sake. For this, “what manner of men we showed ourselves among you,” is the expression of one showing that with much zeal and much vehemence we were ready to give up our lives for your sake; and for this thanks are due not to us, but to you, because you were elect. On this account also he says elsewhere, “And these things I endure for the Elect's sake.” For what would not one endure for the sake of God's beloved ones? And having spoken of his own part, he all but says, For if you were both beloved and elect, we suffer all things with reason. For not only did his praise of them confirm them, but his reminding them that they too themselves had displayed a fortitude corresponding to their zeal: he says,
Ver. 6. “And ye became imitators of us, and of the Lord, having received the word in much affliction, with joy of the Holy Ghost.”
Strange! What an encomium is here! The disciples have suddenly become teachers! They not only heard the word, but they quickly arrived at the same height with Paul. But this is nothing; for see how he exalts them, saying, “You became imitators of the Lord.” How? “Having received the word in much affliction, with joy of the Holy Ghost.” Not merely with affliction, but with much affliction. And this we may learn from the Acts of the Apostles, how they raised a persecution against them. And they troubled all the rulers of the city, and they instigated the city against them. And it is not enough to say, you were afflicted indeed, and believed, and that grieving, but even rejoicing. Which also the Apostles did: “Rejoicing,” it is said, “that they were counted worthy to suffer dishonor for the Name.” For it is this that is admirable. Although neither is that a slight matter, in any way to bear afflictions. But this now was the part of men surpassing human nature, and having, as it were, a body incapable of suffering.
But how were they imitators of the Lord? Because He also endured many sufferings, but rejoiced. For He came to this willingly. For our sakes He emptied Himself. He was about to be spit upon, to be beaten and crucified, and He so rejoiced in suffering these things, that He said to the Father, “Glorify Me.”
“With joy of the Holy Ghost,” he says. That no one may say, how do you speak of “affliction”? How “of joy”? How can both meet in one? He has added, “with joy of the Holy Ghost.” The affliction is in things bodily, and the joy in things spiritual. How? The things which happened to them were grievous, but not so the things which sprang out of them, for the Spirit does not allow it. So that it is possible both for him who suffers, not to rejoice, when one suffers for his sins; and being beaten to take pleasure, when one suffers for Christ's sake. For such is the joy of the Spirit. In return for the things which appear to be grievous, it brings out delight. They have afflicted you, he says, and persecuted you, but the Spirit did not forsake you, even in those circumstances. As the Three Children in the fire were refreshed with dew, so also were you refreshed in afflictions. But as there it was not of the nature of the fire to sprinkle dew, but of the “whistling wind,” so also here it was not of the nature of affliction to produce joy, but of the suffering for Christ's sake, and of the Spirit bedewing them, and in the furnace of temptation setting them at ease. Not merely with joy, he says, but “with much joy.” For this is of the Holy Spirit.
Ver. 7. “So that you became ensamples to all that believe in Macedonia and Achaia.”
And yet it was later that he went to them. But ye so shone, he says, that you became teachers of those who received (the word) before you. And this is like the Apostle. For he did not say, so that you became ensamples in regard to believing, but you became an ensample to those who already believed; how one ought to believe in God, you taught, who from the very beginning entered into your conflict.
“And in Achaia,” he says; that is, in Greece.
Do you see how great a thing is zeal? That it does not require time, nor delay, nor procrastination, but it is sufficient only to venture one's self, and all is fulfilled. Thus then though coming in later to the Preaching, they became teachers of those who were before them.
Moral. Let no one therefore despair, even though he has lost much time, and has done nothing. It is possible for him even in a little while to do so much, as he never has done in all his former time. For if he who before did not believe, shone so much at the beginning, how much more those who have already believed! Let no one, again, upon this consideration be remiss, because he perceives that it is possible in a short time to recover everything. For the future is uncertain, and the Day of the Lord is a thief, setting upon us suddenly when we are sleeping. But if we do not sleep, it will not set upon us as a thief, nor carry us off unprepared. For if we watch and be sober, it will not set upon us as a thief, but as a royal messenger, summoning us to the good things prepared for us. But if we sleep, it comes upon us as a thief. Let no one therefore sleep, nor be inactive in virtue, for that is sleep. Do you not know how, when we sleep, our goods are not in safety, how easy they are to be plotted against? But when we are awake, there needs not so much guarding. When we sleep, even with much guarding we often perish. There are doors, and bolts, and guards, and outer guards, and the thief has come upon us.
Why then do I say this? Because, if we wake we shall not need the help of others; but if we sleep, the help of others will profit us nothing, but even with this we perish. It is a good thing to enjoy the prayer of the Saints, but it is when we ourselves also are on the alert. And what need, you say, have I of another's prayer, if I am on the alert myself. And in truth, do not place yourself in a situation to need it; I do not wish that you should; but we are always in need of it, if we think rightly. Paul did not say, what need have I of prayer? And yet those who prayed were not worthy of him, or rather not equal to him; and you say, what need have I of prayer? Peter did not say, What need have I of prayer, for “prayer,” it says, “was made earnestly of the Church unto God for him.” And you say, What need have I of prayer? On this account you need it, because you think that you have no need. Yea, though thou become as Paul, you have need of prayer. Do not exalt yourself, lest you be humbled.
Source: Homilies on First Thessalonians (New Advent)