7 Then, as having uttered the gentler part of his message, and soothed and relaxed the hearer, he again binds him up, that he may not become remiss. For such was the nature of the Jewish nation; by all encouraging things they were easily puffed up, and corrupted. Wherefore he again adduces his terrors, saying, “Whose fan is in His hand.”
Thus, as before he had spoken of the punishment, so here he points out the Judge likewise, and introduces the eternal vengeance. For “He will burn the chaff,” says he, “with unquenchable fire.” You see that He is Lord of all things, and that He is Himself the Husbandman; albeit in another place He calls His Father the same. For “My Father,” says He, “is the Husbandman.” Thus, inasmuch as He had spoken of an axe, lest you should suppose that the thing needed labor, and the separation was hard to make; by another comparison he suggests the easiness of it, implying that all the world is His; since He could not punish those who were not His own. For the present, it is true, all are mingled together (for though the wheat appears gleaming through, yet it lies with the chaff, as on a threshing floor, not as in a garner), but then, great will be the separation.
Where now are they by whom hell-fire is disbelieved? Since surely here are two points laid down, one, that He will baptize with the Holy Ghost, the other, that He will burn up the disobedient. If then that is credible, so is this too, assuredly. Yea, this is why the two predictions are put by him in immediate connection, that by that which has taken place already, he might accredit the other, as yet unaccomplished. For Christ too Himself in many places does so, often of the same things, and often of opposites, setting down two prophecies; the one of which He performs here, the other He promises in the future; that such as are too contentious may, from the one which has already come to pass, believe the other also, which is not yet accomplished. For instance, to them that strip themselves of all that they have for His sake He promised to give an hundred fold in the present world, and life eternal in that which is to come; by the things already given making the future also credible. Which, as we see, John likewise has done in this place; laying down two things, that He shall both baptize with the Holy Ghost, and burn up with unquenchable fire. Now then, if He had not baptized with the Spirit the apostles, and all every day who are willing, you might have doubts concerning those other things too; but if that which seems to be greater and more difficult, and which transcends all reason, has been done, and is done every day; how do you deny that to be true, which is easy, and comes to pass according to reason? Thus having said, “He shall baptize with the Holy Ghost and with fire,” and having thence promised great blessings; lest you, released wholly from the former things, grow supine, he has added the fan, and the judgment thereby declared. Thus, “think not at all,” says he, “that your baptism suffices, if you become ordinary persons hereafter:” for we need both virtue, and plenty of that known self-restraint. Therefore as by the axe he urges them unto grace, and unto the font, so after grace he terrifies them by the fan, and the unquenchable fire. And of the one sort, those yet unbaptized, he makes no distinction, but says in general, “Every tree that brings not forth good fruit is hewn down,” punishing all the unbelievers. Whereas after baptism He works out a kind of division, because many of them that believed would exhibit a life unworthy of their faith.
Let no man then become chaff, let no one be tossed to and fro, nor lie exposed to wicked desires, blown about by them easily every way. For if you continue wheat, though temptation be brought on you, you will suffer nothing dreadful; nay, for in the threshing floor, the wheels of the car, that are like saws, do not cut in pieces the wheat; but if you fall away into the weakness of chaff, you will both here suffer incurable ills, being smitten of all men, and there you will undergo the eternal punishment. For all such persons both before that furnace become food for the irrational passions here, as chaff is for the brute animal: and there again they are material and food for the flame.
Now to have said directly that He will judge men's doings, would not so effectually procure acceptance for His doctrine: but to blend with it the parable, and so establish it all, was apter to persuade the hearer, and attract him by a more ample encouragement. Wherefore also Christ Himself for the most part so discourses with them; threshing floor, and harvest, and vineyard, and wine-press, and field, and net, and fishing, and all things familiar, and among which they were busied He makes ingredients in His discourses. This kind of thing then the Baptist likewise did here, and offered an exceeding great demonstration of his words, the giving of the Spirit. For “He who has so great power, as both to forgive sins, and to give the Spirit, much more will these things also be within His power:” so he speaks.
Do you see how now in due order the mystery came to be laid as a foundation, before the resurrection and judgment?
“And wherefore,” it may be said, “did he not mention the signs and wonders which were straightway to be done by Him?” Because this was greater than all, and for its sake all those were done. Thus, in his mention of the chief thing, he comprehended all; death dissolved, sins abolished, the curse blotted out, those long wars done away; our entrance into paradise, our ascent into heaven, our citizenship with the angels, our partaking of the good things to come: for in truth this is the earnest of them all. So that in mentioning this, he has mentioned also the resurrection of our bodies, and the manifestation of His miracles here, and our partaking of His kingdom, and the good things, which “eye has not seen, nor ear heard, neither have entered into the heart of man.” For all these things He bestowed on us by that gift. It was therefore superfluous to speak of the signs that were immediately to ensue, and which sight can judge of; but those were meet to be discoursed on, whereof they doubted; as for instance, that He is the Son of God; that He exceeds John beyond comparison; that He “bears the sin of the world;” that He will require an account of all that we do; that our interests are not limited to the present, but elsewhere every one will undergo the due penalty. For these things were not as yet proveable by sight.
Source: Homilies on the Gospel of St. Matthew (New Advent)