Genesis 41:27-31

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. 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.