4 Do you see how by those very things, through which most especially men everywhere affect wickedness, even by these most of all He deters them from it, and brings them back to virtue? “For with what intent do you desire riches?” says He; “is it not that you may enjoy pleasure and luxury? Why now, this above all things you will fail to obtain thereby, it will rather be just contrary.” For if, when our eyes are stricken out, we perceive not any pleasant thing, because of such our calamity; much more will this be our case in the perversion and maiming of the mind.
Again, with what intent do you bury it in the earth? That it may be kept in safety? But here too again it is the contrary, says He.
And thus, as in dealing with him that for vainglory fasts and gives alms and prays, by those very things which he most desires He had allured him not to be vainglorious:— “for with what intent,” says He, “do you so pray and give alms? For love of the glory that may be had from men? Then do not pray thus,” says He, “and so you shall obtain it in the day that is to come:”— so He has taken captive the covetous man also, by those things for which he was most earnest. Thus: “what would you?” says He, “to have your wealth preserved, and to enjoy pleasure? Both these things I will afford you in great abundance, if you lay up your gold in that place, where I bid you.”
It is true that hereafter He displayed more clearly the evil effect of this on the mind, I mean, when He made mention of the thorns; but for the present, even here He has strikingly intimated the same, by representing him as darkened who is beside himself in this way.
And as they that are in darkness see nothing distinct, but if they look at a rope, they suppose it to be a serpent, if at mountains and ravines, they are dead with fear; so these also: what is not alarming to them that have sight, that they regard with suspicion. Thus among other things they tremble at poverty: or rather not at poverty only, but even at any trifling loss. Yea, and if they should lose some little matter, those who are in want of necessary food do not so grieve and bewail themselves as they. At least many of the rich have come even to the halter, not enduring such ill fortune: and to be insulted also, and to be despitefully used, seems to them so intolerable, that even because of this again many have actually torn themselves from this present life. For to everything wealth had made them soft, except to the waiting on it. Thus, when it commands them to do service unto itself, they venture on murders, and stripes, and revilings, and all shame. A thing which comes of the utmost wretchedness; to be of all men most effeminate, where one ought to practise self-command, but where more caution was required, in these cases again to become more shameless and obstinate. Since in fact the same kind of thing befalls them, as one would have to endure who had spent all his goods on unfit objects. For such an one, when the time of necessary expenditure comes on, having nothing to supply it, suffers incurable evils, forasmuch as all that he had has been ill spent beforehand.
And as they that are on the stage, skilled in those wicked arts, do in them go through many things strange and dangerous, but in other necessary and useful things none so ridiculous as they; even so is it with these men likewise. For so such as walk upon a stretched rope, making a display of so much courage, should some great emergency demand daring or courage, they are not able, neither do they endure even to think of such a thing. Just so they likewise that are rich, daring all for money, for self-restraint's sake endure not to submit to anything, be it small or great. And as the former practise both a hazardous and fruitless business; even so do these undergo many dangers and downfalls, but arrive at no profitable end. Yea, they undergo a twofold darkness, both having their eyes put out by the perversion of their mind, and being by the deceitfulness of their cares involved in a great mist. Wherefore neither can they easily so much as see through it. For he that is in darkness, is freed from the darkness by the mere appearance of the sun; but he that has his eyes mutilated not even when the sun shines; which is the very case of these men: not even now that the Sun of Righteousness has shone out, and is admonishing, do they hear, their wealth having closed their eyes. And so they have a twofold darkness to undergo, part from themselves, part from disregard to their teacher.
Source: Homilies on the Gospel of St. Matthew (New Advent)