What does Deuteronomy 8:6 mean?

He humbled you, and allowed you to be hungry, and fed you with manna, which you didn’t know, neither did your fathers know; that he might teach you that man does not live by bread only, but man lives by every word that proceeds out of Yahweh’s mouth.

Your clothing didn’t grow old on you, neither did your foot swell, these forty years.

You shall consider in your heart that as a man disciplines his son, so Yahweh your God disciplines you.

For Yahweh your God brings you into a good land, a land of brooks of water, of springs, and underground water flowing into valleys and hills;

a land of wheat and barley, and vines and fig trees and pomegranates; a land of olive trees and honey;

a land in which you shall eat bread without scarceness, you shall not lack anything in it; a land whose stones are iron, and out of whose hills you may dig copper.