Deuteronomy 8:16-20

16He gave you manna to eat in the wilderness, something your ancestors had never known, to humble and test you so that in the end it might go well with you.

17You may say to yourself, “My power and the strength of my hands have produced this wealth for me.”

18But remember the Lord your God, for it is he who gives you the ability to produce wealth, and so confirms his covenant, which he swore to your ancestors, as it is today.

19If you ever forget the Lord your God and follow other gods and worship and bow down to them, I testify against you today that you will surely be destroyed.

20Like the nations the Lord destroyed before you, so you will be destroyed for not obeying the Lord your God.