Genesis 48:5, 13-14, 18-20

Furthermore, I will adopt as my very own your two sons who were born in the land of Egypt before I came here. Yes, I claim Ephraim and Manasseh as mine, no less than my two oldest, Reuben and Simeon.

And Joseph took his sons and had them stand facing their grandfather Israel, Ephraim at Israel’s left hand, and Manasseh at Israel’s right hand. But Israel crossed his arms, and stretched out his right hand on the head of the younger son, Ephraim, and his left hand on the head of the firstborn son, Manasseh.

“Not that way,” Joseph said to his father, “Here, father, put your right hand on the firstborn’s head.” But his father refused and said, “I know, my son, I know. Manasseh’s descendants will also multiply and become a great people. His younger brother will become even greater than he, and his tribe will one day give rise to many nations.” So Jacob blessed them that day, saying, “Israel will use your names when they pronounce blessings! They will say, ‘May God make you like Ephraim and like Manasseh!’ ”