Deuteronomy 8:2; Deuteronomy 8:16

2 "You shall remember all the way which the LORD your God has led you in the wilderness these forty years, that He might humble you, testing you, to know what was in your heart, whether you would keep His commandments or not.

16 "In the wilderness He fed you manna which your fathers did not know, that He might humble you and that He might test you, to do good for you in the end.