Deu 8:2 You are to remember everything of the way in which YHVH led you these forty years in the desert, humbling and testing you in order to know what was in your heart—whether you would obey his mitzvot or not.
Deu 8:3 He humbled you, allowing you to become hungry, and then fed you with manna, which neither you nor your ancestors had ever known, to make you understand that a person does not live on food alone but on everything that comes from the mouth of YHVH.