Genesis 41:31 (KJV)

The seven good kine are seven years; and the seven good ears are seven years: the dream is one.

And the seven thin and ill favoured kine that came up after them are seven years; and the seven empty ears blasted with the east wind shall be seven years of famine.

This is the thing which I have spoken unto Pharaoh: What God is about to do he sheweth 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 for that the dream was doubled unto Pharaoh twice; 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 officers 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 those good years that come, and lay up corn under the hand of Pharaoh, and let them keep food in the cities.

And that food shall be for 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.