Genesis 41:28-36

That is the thing which I spake unto Pharaoh: what God is about to do he hath showed unto Pharaoh. Behold, there come seven years of great plenty throughout all the land of Egypt: and there shall arise after them seven years of famine; and all the plenty shall be forgotten in the land of Egypt; and the famine shall consume the land; and the plenty shall not be known in the land by reason of that famine which followeth; for it shall be very grievous. And for that the dream was doubled unto Pharaoh, it is because the thing is established by God, and God will shortly bring it to pass. Now therefore let Pharaoh look out a man discreet and wise, and set him over the land of Egypt. Let Pharaoh do this, and let him appoint overseers over the land, and take up the fifth part of the land of Egypt in the seven plenteous years. And let them gather all the food of these good years that come, and lay up grain under the hand of Pharaoh for food in the cities, and let them keep it. And the food shall be for a store to the land against the seven years of famine, which shall be in the land of Egypt; that the land perish not through the famine.