Genesis 41:46-51

Now Joseph [had been in Egypt thirteen years and] was thirty years old when he stood before Pharaoh, king of Egypt. Joseph departed from the presence of Pharaoh and went through all the land of Egypt [performing his duties]. In the seven abundant years the earth produced handfuls [for each seed planted]. And Joseph gathered all the [surplus] food of the seven [good] years in the land of Egypt and stored [enormous quantities of] the food in the cities. He stored away in every city the food [collected] from its own surrounding fields. Thus Joseph gathered and stored up grain in great abundance like the sand of the sea, until he stopped counting it, for it could not be measured. Now two sons were born to Joseph before the years of famine came, whom Asenath, the daughter of Potiphera, priest of On, bore to him. Joseph named the firstborn Manasseh (causing to forget), for he said, “God has made me forget all my trouble and hardship and all [the sorrow of the loss of] my father’s household.”