Deuteronomy 8:16-18

He fed you with manna in the wilderness, a food unknown to your ancestors. He did this to humble you and test you for your own good. He did all this so you would never say to yourself, ‘I have achieved this wealth with my own strength and energy.’ Remember the LORD your God. He is the one who gives you power to be successful, in order to fulfill the covenant he confirmed to your ancestors with an oath.