Genesis 13:2

Let us not rush idly by this reading but rather recognize clearly the precision of sacred Scripture in recounting nothing to us as of no importance. "Now Abram was very rich," the text says. Consider first of all this very fact that its habit had been to convey nothing idly or to no purpose. In this case is it not without reason that [the text] calls him rich. Nowhere else had it made mention of his being rich—this was the first time. Why, and to what purpose? For you to learn the inventiveness of God's wisdom and providence displayed in favor of the great man, as well as his boundless and extraordinary power. The man who had gone into exile in Egypt under the pressure of famine, unable to sustain the privations of Canaan, suddenly became rich—and not just rich but very rich, not only in cattle but also in silver and gold. Do you not see the extent of God's providence? Abraham left to find relief from famine and came back not simply enjoying relief from famine but invested with great wealth and untold reputation, his identity well known to everyone. Now the inhabitants of Canaan gained a more precise idea of the good man's virtue by seeing this sudden transformation that had taken place—the stranger who had gone down into Egypt as a refugee and vagabond now flush with so much wealth.

"He was very rich," as is natural for one who was not lacking in any good thing, who did not covet the goods of others, because he lacked nothing of what he would have wished to regard as his own. For this is what it means to be rich: to have what is sufficient to satisfy one's own desires. Frugality has a measure. Richness does not. Its measure is in the will of the seeker. He was rich in cattle, in silver and gold. What does this mean? I do not think that the intention is to praise the riches of this world but the righteousness of this man. Thus I understand cattle to be the bodily senses, because they are irrational. Silver represents the word and gold the mind. Abraham was indeed rich, because he was in control of his irrational senses. Indeed, he tamed them and made them docile, so that they might participate in rationality. His word was radiant with the brightness of faith, purified by the grace of spiritual discipline. His mind was full of prudence. And this is why the good mind is compared with gold, because just as gold is more precious than other metals, so the good mind is the best part among those that make up the human substance. So the richness of the wise man consists in these three things: in sensation, in word and in mind. Their order establishes a gradation, as we read also in the apostle: "So faith, hope, love abide, these three; but the greatest of these is love." The mind too, then, is the greatest, because it is the mind that grinds the spiritual grain to purify the senses and the word. The character of the wise man is preserved at every point.So it is that through the simple facts of Abraham's life great doctrines are expounded and illustrated. Rich indeed is the one who enriches even the arguments of the philosophers, who would formulate their precepts on the basis of his conduct. It was his riches, then, that Scripture had brought to light.