19 And this is not the only disaster, that the change comes suddenly; but that the rich man comes unpractised to the endurance of poverty. But not so the poor man; for he confides not in gold and silver, which are lifeless matter, but in “God, who gives us all things richly to enjoy.” So that the rich man stands in more uncertainty than the poor man, experiencing, as he does, frequent and diversified changes. What is the sense of this? “Who gives to us all things richly to enjoy.” God gives all those things with liberality, which are more necessary than riches; such, for example, as the air, the water, the fire, the sun; all things of this kind.
The rich man is not able to say that he enjoys more of the sunbeams than the poor man; he is not able to say that he breathes more plenteous air: but all these are offered alike to all. And wherefore, one may say, is it the greater and more necessary blessings, and those which maintain our life, that God has made common; but the smaller and less valuable (I speak of money) are not thus common. Why is this? In order that our life might be disciplined, and that we might have training ground for virtue.
For if these necessaries were not common, perhaps they who are rich, practising their usual covetousness, would strangle those who were poor. For if they do this for the sake of money, much rather would they do so for the things referred to. Again, if money was also an universal possession, and were offered in the same manner to all, the occasion for almsgiving, and the opportunity for benevolence, would be taken away.
Source: Homilies on the Statues (New Advent)