9 Sometimes also the rich man is found to be poor, and something is bestowed upon him by the poor. Somebody comes to a river, so much the more delicate as he is more rich; he cannot pass over: if he were to pass over with bare limbs, he would catch cold, would be ill, would die: a poor man more active in body comes up: he carries the rich man over; he gives alms unto the rich. Think not therefore those only poor, who have not money....Thus love ye, thus be ye affectioned unto one another. Attend not solely to yourselves: but to those who are in want around you. But because these things take place in this life with troubles and cares, faint not. You sow in tears, you shall reap in joy.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)