Deuteronomy 8:3-7

So He humbled you, allowed you to hunger, and fed you with manna which you did not know nor did your fathers know, that He might make you know that man shall not live by bread alone; but man lives by every word that proceeds from the mouth of the LORD. Your garments did not wear out on you, nor did your foot swell these forty years. You should know in your heart that as a man chastens his son, so the LORD your God chastens you. “Therefore you shall keep the commandments of the LORD your God, to walk in His ways and to fear Him. For the LORD your God is bringing you into a good land, a land of brooks of water, of fountains and springs, that flow out of valleys and hills