6 Marvel not, therefore, if we have thus sketched the covetous man (for in truth he is far worse than what we have said); but let us consider how we shall deliver him from the demon. How then shall we deliver him? If he may be clearly made aware, that his love of money stands very much in his way in respect of this very object, the gaining of money; for they that wish to gain in little things undergo great losses; whence accordingly a proverb has been put forth to this same effect. Many, for instance, on many occasions, wishing to lend at large usury, and through the expectation of gain not having inquired about them who receive their money, have together with the interest lost also all their capital. Others again falling into dangers, and not willing to give up a little have together with the substance lost their life too.
Again, when it has been in men's power to purchase either gainful offices, or some other such thing, by some trifling meanness they have lost all. For because they know not how to sow, but have ever practised reaping, they of course continually fail of their harvest. For no man can be always reaping, as neither can he be always gaining. Therefore since they are not willing to spend, neither do they know how to gain. And should they have to take a wife, the same thing again befalls them; for either they are deceived into taking a poor wife for a rich one, or when they have brought home one that is rich, but full of faults without number, here too they have incurred more loss than gain. For it is not superfluity but virtue, that causes wealth. For what profit is there of her wealth, when she is expensive and dissolute, and scatters all abroad more vehemently than any wind? What if she be unchaste, and bring in numberless lovers? What if she be drunken? Will she not quickly make her husband the poorest of men? But they do not only marry, but also buy at great risk, from their great covetousness, laboring to find not good slaves, but cheap ones.
Consider then all these things (for the words concerning hell and the kingdom you are not yet able to hear), and bearing in mind the losses which you have often undergone from your love of money, in loans, and in purchases, and in marriages, and in offices of power, and in all the rest; withdraw yourselves from doating on money.
For so shall you be able to live the present life in security, and after a little advance to hear also the words that treat on self-government, and see through and look upon the very Sun of Righteousness, and to attain unto the good things promised by Him; unto which God grant we may all attain, by the grace and love towards man of our Lord Jesus Christ, to whom be glory and might forever and ever. Amen.
Source: Homilies on the Gospel of St. Matthew (New Advent)