Genesis 41:51-52

41:51 Joseph named the firstborn Manasseh, saying, “Certainly God has made me forget all my trouble and all my father’s house.” 41:52 He named the second child Ephraim, saying, “Certainly God has made me fruitful in the land of my suffering.”

Genesis 46:20

46:20 Manasseh and Ephraim were born to Joseph in the land of Egypt. Asenath daughter of Potiphera, priest of On, bore them to him.

Genesis 48:5

48:5 “Now, as for your two sons, who were born to you in the land of Egypt before I came to you in Egypt, they will be mine. Ephraim and Manasseh will be mine just as Reuben and Simeon are.

Genesis 48:13-20

48:13 Joseph positioned them; he put Ephraim on his right hand across from Israel’s left hand, and Manasseh on his left hand across from Israel’s right hand. Then Joseph brought them closer to his father. 48:14 Israel stretched out his right hand and placed it on Ephraim’s head, although he was the younger. Crossing his hands, he put his left hand on Manasseh’s head, for Manasseh was the firstborn.

48:15 Then he blessed Joseph and said,

“May the God before whom my fathers

Abraham and Isaac walked –

the God who has been my shepherd

all my life long to this day,

48:16 the Angel who has protected me

from all harm –

bless these boys.

May my name be named in them,

and the name of my fathers Abraham and Isaac.

May they grow into a multitude on the earth.”

48:17 When Joseph saw that his father placed his right hand on Ephraim’s head, it displeased him. So he took his father’s hand to move it from Ephraim’s head to Manasseh’s head. 48:18 Joseph said to his father, “Not so, my father, for this is the firstborn. Put your right hand on his head.”

48:19 But his father refused and said, “I know, my son, I know. He too will become a nation and he too will become great. In spite of this, his younger brother will be even greater and his descendants will become a multitude of nations.” 48:20 So he blessed them that day, saying,

“By you will Israel bless, saying,

‘May God make you like Ephraim and Manasseh.’”

So he put Ephraim before Manasseh.