Deuteronomy 8:2; Deuteronomy 8:16

2 And you shall remember the whole way that the LORD your God has led you these forty years in the wilderness, that he might humble you, testing you to know what was in your heart, whether you would keep his commandments or not.

16 who fed you in the wilderness with manna that your fathers did not know, that he might humble you and test you, to do you good in the end.