Nor was the renunciation of wealth and the bestowment of it on the poor or needy a new thing; for many did so before the Saviour's advent,— some because of the leisure (thereby obtained) for learning, and on account of a dead wisdom; and others for empty fame and vainglory, as the Anaxagorases, the Democriti, and the Crateses.
XII. Why then command as new, as divine, as alone life-giving, what did not save those of former days? And what peculiar thing is it that the new creature the Son of God intimates and teaches? It is not the outward act which others have done, but something else indicated by it, greater, more godlike, more perfect, the stripping off of the passions from the soul itself and from the disposition, and the cutting up by the roots and casting out of what is alien to the mind. For this is the lesson peculiar to the believer, and the instruction worthy of the Saviour. For those who formerly despised external things relinquished and squandered their property, but the passions of the soul, I believe, they intensified. For they indulged in arrogance, pretension, and vainglory, and in contempt of the rest of mankind, as if they had done something superhuman. How then would the Saviour have enjoined on those destined to live for ever what was injurious and hurtful with reference to the life which He promised? For although such is the case, one, after ridding himself of the burden of wealth, may none the less have still the lust and desire for money innate and living; and may have abandoned the use of it, but being at once destitute of and desiring what he spent, may doubly grieve both on account of the absence of attendance, and the presence of regret. For it is impossible and inconceivable that those in want of the necessaries of life should not be harassed in mind, and hindered from better things in the endeavour to provide them somehow, and from some source.
XIII. And how much more beneficial the opposite case, for a man, through possessing a competency, both not himself to be in straits about money, and also to give assistance to those to whom it is requisite so to do! For if no one had anything, what room would be left among men for giving? And how can this dogma fail to be found plainly opposed to and conflicting with many other excellent teachings of the Lord? “Make to yourselves friends of the mammon of unrighteousness, that when you fail, they may receive you into the everlasting habitations.” “Acquire treasures in heaven, where neither moth nor rust destroys, nor thieves break through.” How could one give food to the hungry, and drink to the thirsty, clothe the naked, and shelter the houseless, for not doing which He threatens with fire and the outer darkness, if each man first divested himself of all these things? Nay, He bids Zaccheus and Matthew, the rich tax-gathers, entertain Him hospitably. And He does not bid them part with their property, but, applying the just and removing the unjust judgment, He subjoins, “Today salvation has come to this house, forasmuch as he also is a son of Abraham.” He so praises the use of property as to enjoin, along with this addition, the giving a share of it, to give drink to the thirsty, bread to the hungry, to take the houseless in, and clothe the naked. But if it is not possible to supply those needs without substance, and He bids people abandon their substance, what else would the Lord be doing than exhorting to give and not to give the same things, to feed and not to feed, to take in and to shut out, to share and not to share? Which were the most irrational of all things.
XIV. Riches, then, which benefit also our neighbours, are not to be thrown away. For they are possessions, inasmuch as they are possessed, and goods, inasmuch as they are useful and provided by God for the use of men; and they lie to our hand, and are put under our power, as material and instruments which are for good use to those who know the instrument. If you use it skilfully, it is skilful; if you are deficient in skill, it is affected by your want of skill, being itself destitute of blame. Such an instrument is wealth. Are you able to make a right use of it? It is subservient to righteousness. Does one make a wrong use of it? It is, on the other hand, a minister of wrong. For its nature is to be subservient, not to rule. That then which of itself has neither good nor evil, being blameless, ought not to be blamed; but that which has the power of using it well and ill, by reason of its possessing voluntary choice. And this is the mind and judgment of man, which has freedom in itself and self-determination in the treatment of what is assigned to it. So let no man destroy wealth, rather than the passions of the soul, which are incompatible with the better use of wealth. So that, becoming virtuous and good, he may be able to make a good use of these riches. The renunciation, then, and selling of all possessions, is to be understood as spoken of the passions of the soul.
XV. I would then say this. Since some things are within and some without the soul, and if the soul make a good use of them, they also are reputed good, but if a bad, bad—whether does He who commands us to alienate our possessions repudiate those things, after the removal of which the passions still remain, or those rather, on the removal of which wealth even becomes beneficial? If therefore he who casts away worldly wealth can still be rich in the passions, even though the material [for their gratification] is absent—for the disposition produces its own effects, and strangles the reason, and presses it down and inflames it with its inbred lusts—it is then of no advantage to him to be poor in purse while he is rich in passions. For it is not what ought to be cast away that he has cast away, but what is indifferent; and he has deprived himself of what is serviceable, but set on fire the innate fuel of evil through want of the external means [of gratification]. We must therefore renounce those possessions that are injurious, not those that are capable of being serviceable, if one knows the right use of them. And what is managed with wisdom, and sobriety, and piety, is profitable; and what is hurtful must be cast away. But things external hurt not. So then the Lord introduces the use of external things, bidding us put away not the means of subsistence, but what uses them badly. And these are the infirmities and passions of the soul.
XVI. The presence of wealth in these is deadly to all, the loss of it salutary. Of which, making the soul pure—that is, poor and bare—we must hear the Saviour speaking thus, “Come, follow Me.” For to the pure in heart He now becomes the way. But into the impure soul the grace of God finds no entrance. And that (soul) is unclean which is rich in lusts, and is in the throes of many worldly affections. For he who holds possessions, and gold, and silver, and houses, as the gifts of God; and ministers from them to the God who gives them for the salvation of men; and knows that he possesses them more for the sake of the brethren than his own; and is superior to the possession of them, not the slave of the things he possesses; and does not carry them about in his soul, nor bind and circumscribe his life within them, but is ever labouring at some good and divine work, even should he be necessarily some time or other deprived of them, is able with cheerful mind to bear their removal equally with their abundance. This is he who is blessed by the Lord, and called poor in spirit, a meet heir of the kingdom of heaven, not one who could not live rich.
Source: Who is the Rich Man That Shall Be Saved? (New Advent)