Deuteronomy 8:18

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.

Deuteronomy 8:18 In-Context

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.
19 If you do forget the Lord your God and follow other gods to serve and worship them, I solemnly warn you today that you shall surely perish.
20 Like the nations that the Lord is destroying before you, so shall you perish, because you would not obey the voice of the Lord your God.
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.