"He humbled you, causing you to hunger and then feeding you with manna, to teach you that man does not live on bread alone but on every word that comes from the mouth of God." (Deuteronomy 8:3)
Moses commands Israel to remember all the way the LORD has led them through the forty years of wilderness, humbling them, testing them, knowing their hearts, whether they would keep his commands or not. He humbled you, causing you to hunger and then feeding you with manna, to teach you that man does not live on bread alone but on every word that comes from the mouth of God. Jesus will quote this verse when tempted by Satan in the wilderness, making it the counter to the devil's first temptation: turn these stones into bread. The manna was not only food; it was a lesson that the sustaining word of God is more fundamental than physical sustenance. The Catechism identifies this verse as the scriptural ground for the primacy of the word of God in Christian life and liturgy (CCC 1334).
Moses warns against the prosperity that awaits: when you eat and are satisfied, when you build fine houses and your herds grow large, when your silver and gold increase and all you have is multiplied, do not become proud and forget the LORD who brought you out of Egypt. If you forget the LORD and follow other gods, you will surely be destroyed. Do not say to yourself: my power and the strength of my hands have produced this wealth for me. Remember the LORD, for it is he who gives you the ability to produce wealth, confirming his covenant as he swore to your ancestors.
Brothers and sisters, man does not live on bread alone but on every word that comes from the mouth of God. This is the deepest truth about human nature: we are constituted not only by physical nutrition but by the word of the Creator. Every human being has a hunger that bread cannot satisfy. Only the word of God reaches it. Feed that hunger as seriously as you feed the physical one.
Lord God, you humbled Israel with hunger so they would know that your word sustains more than bread. Humble us enough to receive that lesson. Feed us with every word that comes from your mouth. And when prosperity comes, keep us from forgetting who gave us the ability to produce it. Through Christ our Lord. Amen.