Deuteronomy 8:12-18

When you eat all you want and build nice houses and live in them, when your herds and flocks grow large and your silver and gold increase, when you have more of everything, then your heart will become proud. You will forget the LORD your God, who brought you out of the land of Egypt, where you were slaves. He led you through the large and terrible desert that was dry and had no water, and that had poisonous snakes and stinging insects. He gave you water from a solid rock and manna to eat in the desert. Manna was something your ancestors had never seen. He did this to take away your pride and to test you, so things would go well for you in the end. You might say to yourself, “I am rich because of my own power and strength,” but remember the LORD your God! It is he who gives you the power to become rich, keeping the agreement he promised to your ancestors, as it is today.