Deuteronomy 8:16-20

16In the wilderness He fed you manna 1which your fathers did not know, that He might humble you and that He might 2test you, to do good for you 3in the end.

17Otherwise, 4you may say in your heart, ‘My power and the strength of my hand made me this wealth.’

18But you shall remember the Lord your God, for 5it is He who is giving you power to make wealth, that He may confirm His covenant which He swore to your fathers, as it is this day.

19It shall come about if you ever forget the Lord your God and go after other gods and serve them and worship them, 6I testify against you today that you will surely perish.

20Like the nations that the Lord makes to perish before you, so 7you shall perish; because you would not listen to the voice of the Lord your God.