Genesis 48:15-20

And he blessed Joseph, and said: “God, before whom my fathers Abraham and Isaac walked, The God who has fed me all my life long to this day, The Angel who has redeemed me from all evil, Bless the lads; Let my name be named upon them, And the name of my fathers Abraham and Isaac; And let them grow into a multitude in the midst of the earth.” Now when Joseph saw that his father laid his right hand on the head of Ephraim, it displeased him; so he took hold of his father’s hand to remove it from Ephraim’s head to Manasseh’s head. And Joseph said to his father, “Not so, my father, for this one is the firstborn; put your right hand on his head.” But his father refused and said, “I know, my son, I know. He also shall become a people, and he also shall be great; but truly his younger brother shall be greater than he, and his descendants shall become a multitude of nations.” So he blessed them that day, saying, “By you Israel will bless, saying, ‘May God make you as Ephraim and as Manasseh!’ ” And thus he set Ephraim before Manasseh.