Deuteronomy 8:12-18

For when you have become full and prosperous and have built fine homes to live in, and when your flocks and herds have become very large and your silver and gold have multiplied along with everything else, be careful! Do not become proud at that time and forget the LORD your God, who rescued you from slavery in the land of Egypt. Do not forget that he led you through the great and terrifying wilderness with its poisonous snakes and scorpions, where it was so hot and dry. He gave you water from the rock! 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.