Genesis 41:25-27, 33-36

And Joseph said unto Pharaoh, The dream of Pharaoh is one: what God is about to do he hath declared unto Pharaoh. The seven good kine are seven years; and the seven good ears are seven years: the dream is one. And the seven lean and ill-favored kine that came up after them are seven years, and also the seven empty ears blasted with the east wind; they shall be seven years of famine.

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.