Genesis 41:50-52

And unto Joseph were born two sons before the years of famine came, which Asenath the daughter of Poti-pherah priest of On bare unto him. And Joseph called the name of the firstborn Manasseh: For God, said he, hath made me forget all my toil, and all my father's house. And the name of the second called he Ephraim: For God hath caused me to be fruitful in the land of my affliction.