Gen 41:45-52

45Pharaoh gave Joseph the name Zaphenath-paneah; and he gave him Asenath daughter of Potiphera, priest of On, as his wife. Thus Joseph gained authority over the land of Egypt.46Joseph was thirty years old when he entered the service of Pharaoh king of Egypt. And Joseph went out from the presence of Pharaoh, and went through all the land of Egypt.47During the seven plenteous years the earth produced abundantly.48He gathered up all the food of the seven years when there was plenty in the land of Egypt, and stored up food in the cities; he stored up in every city the food from the fields around it.49So Joseph stored up grain in such abundance—like the sand of the sea—that he stopped measuring it; it was beyond measure.50Before the years of famine came, Joseph had two sons, whom Asenath daughter of Potiphera, priest of On, bore to him.51Joseph named the firstborn Manasseh, “For,” he said, “God has made me forget all my hardship and all my father's house.”52The second he named Ephraim, “For God has made me fruitful in the land of my misfortunes.”