And to pass over all the rest, which exceed the sand in multitude; what is equal to the dispensation that has taken place for our sake? In that what was more precious to Him than all, even His only-begotten Son, Him He gave for us His enemies; and not only gave, but after giving, did even set Him before us as food; Himself doing all things that were for our good, both in giving Him, and in making us thankful for all this. For because man is for the most part unthankful, He does Himself everywhere take in hand and bring about what is for our good. And what He did with respect to the Jews, by places, and times, and feasts, reminding them of His benefits, that He did in this case also, by the manner of the sacrifice bringing us to a perpetual remembrance of His bounty in these things.
No one has so labored that we should be approved, and great, and in all things right-minded, as the God who made us. Wherefore both against our will He befriends us often, and without our knowledge oftener than not. And if you marvel at what I have said, I point to this as having occurred not to any ordinary person, but to the blessed Paul. For even that blessed man, when in much danger and affliction, often besought God that the temptations might depart from him: nevertheless God regarded not his request, but his profit, and to signify this He said, “My grace is sufficient for you, for my strength is made perfect in weakness.” So that before He has told him the reason, He benefits him against his will, and without his knowing it.
5. Now what great thing does He ask, in requiring us to be thankful in return for such tender care? Let us then obey, and everywhere keep up this. Since neither were the Jews by anything ruined so much, as by being unthankful; those many stripes, one after another, were brought upon them by nothing else than this; or rather even before those stripes this had ruined and corrupted their soul. “For the hope of the unthankful,” says one, “is like the winter's hoar frost;” it benumbs and deadens the soul, as that does our bodies.
And this springs from pride, and from thinking one's self worthy of something. But the contrite will acknowledge grounds of thanksgiving to God, not for good things only, but also for what seem to be adverse; and how much soever he may suffer, will count none of his sufferings undeserved. Let us then also, the more we advance in virtue, so much the more make ourselves contrite; for indeed this, more than anything else is virtue. Because, as the sharper our sight is, the more thoroughly do we learn how distant we are from the sky; so the more we advance in virtue, so much the more are we instructed in the difference between God and us. And this is no small part of true wisdom, to be able to perceive our own desert. For he best knows himself, who accounts himself to be nothing. Thus we see that both David and Abraham, when they had come up to the highest pitch of virtue, then best fulfilled this; and would call themselves, the one, “earth and ashes,” the other, “a worm;” and all the saints too, like these, acknowledge their own wretchedness. So that he surely who is lifted up in boasting, is the very person to be most ignorant of himself. Wherefore also in our common practice we are wont to say of the proud, “he knows not himself,” “he is ignorant of himself.” And he that knows not himself, whom will he know? For as he that knows himself will know all things, so he who knows not this, neither will he know the rest.
Such an one was he that says, “I will exalt my throne above the Heavens.” and did not account himself to be worthy so much as of the title of the apostles, after so many and so great deeds of goodness.
Him therefore let us emulate and follow. And we shall follow him, if we rid ourselves of earth, and of things on earth. For nothing makes a man to be so ignorant of himself, as the being rivetted to worldly concerns: nor does anything again so much cause men to be rivetted to worldly concerns, as ignorance of one's self: for these things depend upon each other. I mean, that as he that is fond of outward glory, and highly esteems the things present, if he strive for ever, is not permitted to understand himself; so he that overlooks these things will easily know himself; and having come to the knowledge of himself, he will proceed in order to all the other parts of virtue.
In order therefore that we may learn this good knowledge, let us, disengaged from all the perishable things that kindle in us so great flame, and made aware of their vileness, show forth all lowliness of mind, and self-restraint: that we may attain unto blessings, both present and future: by the grace and love towards man of our Lord Jesus Christ, with whom be glory, might, and honor, to the Father, together with the Holy and Good Spirit, now and ever, and world without end. Amen.
Source: Homilies on the Gospel of St. Matthew (New Advent)