Genesis 48:17-20

When Joseph saw his father placing his right hand on Ephraim’s head he was displeased; so he took hold of his father’s hand to move it from Ephraim’s head to Manasseh’s head. Joseph said to him, “No, my father, 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 too will become a people, and he too will become great. Nevertheless, his younger brother will be greater than he, and his descendants will become a group of nations.” He blessed them that day and said, “In your name will Israel pronounce this blessing: ‘May God make you like Ephraim and Manasseh.’ ” So he put Ephraim ahead of Manasseh.