Genesis 41:26-30

The seven good cows are seven years; and the seven good ears are seven years; the dreams are one and the same.

The seven thin and ugly cows that came up after them are seven years, and the seven thin ears scorched by the east wind will be seven years of famine.

It is as I have spoken to Pharaoh: God has shown Pharaoh what He is about to do.

Behold, seven years of great abundance are coming in all the land of Egypt;

and after them seven years of famine will come, and all the abundance will be forgotten in the land of Egypt, and the famine will ravage the land.