Deuteronomy 8:16

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

Deuteronomy 8:16 In-Context

14 then do not exalt yourself, forgetting the Lord your God, who brought you out of the land of Egypt, out of the house of slavery,
15 who led you through the great and terrible wilderness, an arid wasteland with poisonous snakes and scorpions. He made water flow for you from flint rock,
16 and fed you in the wilderness with manna that your ancestors did not know, to humble you and to test you, and in the end to do you good.
17 Do not say to yourself, "My power and the might of my own hand have gotten me this wealth."
18 But remember the Lord your God, for it is he who gives you power to get wealth, so that he may confirm his covenant that he swore to your ancestors, as he is doing today.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.