Deuteronomy 8:3-7

He humbled you and allowed you to be hungry and fed you with manna, [a substance] which you did not know, nor did your fathers know, so that He might make you understand [by personal experience] that man does not live by bread alone, but man lives by every word that proceeds out of the mouth of the LORD. Your clothing did not wear out on you, nor did your feet swell these forty years. Therefore, know in your heart (be fully cognizant) that the LORD your God disciplines and instructs you just as a man disciplines and instructs his son. Therefore, you shall keep the commandments of the LORD your God, to walk [that is, to live each and every day] in His ways and fear [and worship] Him [with awe-filled reverence and profound respect]. [Prov 8:13] For the LORD your God is bringing you into a good land, a land of brooks of water, of fountains and springs, flowing forth in valleys and hills