Genesis 41:29-37

There will come seven years of great plenty throughout all the land of Egypt, but after them there will arise seven years of famine, and all the plenty will be forgotten in the land of Egypt. The famine will consume the land, and the plenty will be unknown in the land by reason of the famine that will follow, for it will be very severe. And the doubling of Pharaoh’s dream means that the thing is fixed by God, and God will shortly bring it about. Now therefore let Pharaoh select a discerning and wise man, and set him over the land of Egypt. Let Pharaoh proceed to appoint overseers over the land and take one-fifth of the produce of the land of Egypt during the seven plentiful years. And let them gather all the food of these good years that are coming and store up grain under the authority of Pharaoh for food in the cities, and let them keep it. That food shall be a reserve for the land against the seven years of famine that are to occur in the land of Egypt, so that the land may not perish through the famine.” This proposal pleased Pharaoh and all his servants.