4 Now having begun, as you see, where most need was, He proceeds to another commandment, one which seems to be opposed to the judgment of the whole world. For whereas all think that they who rejoice are enviable, those in dejection, poverty, and mourning, wretched, He calls these blessed rather than those; saying thus,
“Blessed are they that mourn.”
Yet surely all men call them miserable. For therefore He wrought the miracles beforehand, that in such enactments as these He might be entitled to credit.
And here too again he designated not simply all that mourn, but all that do so for sins: since surely that other kind of mourning is forbidden, and that earnestly, which relates to anything of this life. This Paul also clearly declared, when he said, “The sorrow of the world works death, but godly sorrow works repentance unto salvation, not to be repented of.”
These then He too Himself calls blessed, whose sorrow is of that kind; yet not simply them that sorrow did He designate, but them that sorrow intensely. Therefore He did not say, “they that sorrow,” but “they that mourn.” For this commandment again is fitted to teach us entire self-control. For if those who grieve for children, or wife, or any other relation gone from them, have no fondness for gain or pleasure during that period of their sorrow; if they aim not at glory, are not provoked by insults, nor led captive by envy, nor beset by any other passion, their grief alone wholly possessing them; much more will they who mourn for their own sins, as they ought to mourn, show forth a self-denial greater than this.
Next, what is the reward for these? “For they shall be comforted,” says He.
Where shall they be comforted! Tell me. Both here and there. For since the thing enjoined was exceeding burthensome and galling, He promised to give that, which most of all made it light. Wherefore, if you will be comforted, mourn: and think not this a dark saying. For when God does comfort, though sorrows come upon you by thousands like snow-flakes, you will be above them all. Since in truth, as the returns which God gives are always far greater than our labors; so He has wrought in this case, declaring them that mourn to be blessed, not after the value of what they do, but after His own love towards man. For they that mourn, mourn for misdoings, and to such it is enough to enjoy forgiveness, and obtain wherewith to answer for themselves. But forasmuch as He is full of love towards man, He does not limit His recompense either to the removal of our punishments, or to the deliverance from our sins, but He makes them even blessed, and imparts to them abundant consolation.
But He bids us mourn, not only for our own, but also for other men's misdoings. And of this temper were the souls of the saints: such was that of Moses, of Paul, of David; yea, all these many times mourned for evils not their own.
5. “Blessed are the meek, for they shall inherit the earth.” Tell me, what kind of earth? Some say a figurative earth, but it is not this, for nowhere in Scripture do we find any mention of an earth that is merely figurative. But what can the saying mean? He holds out a sensible prize; even as Paul also does, in that when he had said, “Honor your father and your mother,” he added, “For so shall you live long upon the earth.” And He Himself unto the thief again, “Today shall you be with me in Paradise.”
Thus He does not incite us by means of the future blessings only, but of the present also, for the sake of the grosser sort of His hearers, and such as before the future seek those others.
Thus, for example, further on also He said, “Agree with your adversary.” Then He appoints the reward of such self-command, and says, “Lest at any time the adversary deliver you to the judge, and the judge to the officer.” Do you see whereby He alarmed us? By the things of sense, by what happens before our eyes. And again, “Whosoever shall say to his brother, Raca, shall be in danger of the council.”
And Paul too sets forth sensible rewards at great length, and uses things present in his exhortations; as when he is discoursing about virginity. For having said nothing about the heavens there, for the time he urges it by things present, saying, “Because of the present distress,” and, “But I spare you,” and, “I would have you without carefulness.”
Thus accordingly Christ also with the things spiritual has mingled the sensible. For whereas the meek man is thought to lose all his own, He promises the contrary, saying, “Nay, but this is he who possesses his goods in safety, namely, he who is not rash, nor boastful: while that sort of man shall often lose his patrimony, and his very life.”
And besides, since in the Old Testament the prophet used to say continually, “The meek shall inherit the earth;” He thus weaves into His discourse the words to which they were accustomed, so as not everywhere to speak a strange language.
And this He says, not as limiting the rewards to things present, but as joining with these the other sort of gifts also. For neither in speaking of any spiritual thing does He exclude such as are in the present life; nor again in promising such as are in our life, does He limit his promise to that kind. For He says, “Seek the kingdom of God, and all these things shall be added unto you.” And again: “Whosoever has left houses or brethren, shall receive an hundred fold in this world, and in the future shall inherit everlasting life.”
6. “Blessed are they which do hunger and thirst after righteousness.”
What sort of righteousness? He means either the whole of virtue, or that particular virtue which is opposed to covetousness. For since He is about to give commandment concerning mercy, to show how we must show mercy, as, for instance, not of rapine or covetousness, He blesses them that lay hold of righteousness.
And see with what exceeding force He puts it. For He said not, “Blessed are they which keep fast by righteousness,” but, “Blessed are they which do hunger and thirst after righteousness:” that not merely anyhow, but with all desire we may pursue it. For since this is the most peculiar property of covetousness, and we are not so enamored of meat and drink, as of gaining, and compassing ourselves with more and more, He bade us to transfer this desire to a new object, freedom from covetousness.
Then He appoints the prize, again from things sensible; saying, “for they shall be filled.” Thus, because it is thought that the rich are commonly made such by covetousness, “Nay,” says He, “it is just contrary: for it is righteousness that does this. Wherefore, so long as you do righteously, fear not poverty, nor tremble at hunger. For the extortioners, they are the very persons who lose all, even as he certainly who is in love with righteousness, possesses himself the goods of all men in safety.”
But if they who covet not other men's goods enjoy so great abundance, much more they who give up their own.
“Blessed are the merciful.”
Here He seems to me to speak not of those only who show mercy in giving of money, but those likewise who are merciful in their actions. For the way of showing mercy is manifold, and this commandment is broad. What then is the reward thereof? “For they shall obtain mercy.”
And it seems indeed to be a sort of equal recompence, but it is a far greater thing than the act of goodness. For whereas they themselves show mercy as men, they obtain mercy from the God of all; and it is not the same thing, man's mercy, and God's; but as wide as is the interval between wickedness and goodness, so far is the one of these removed from the other.
“Blessed are the pure in heart, for they shall see God.”
Behold again the reward is spiritual. Now He here calls “pure,” either those who have attained unto all virtue, and are not conscious to themselves of any evil; or those who live in temperance. For there is nothing which we need so much in order to see God, as this last virtue. Wherefore Paul also said, “Follow peace with all men, and holiness, without which no man shall see the Lord.” He is here speaking of such sight as it is possible for man to have.
Source: Homilies on the Gospel of St. Matthew (New Advent)