Genesis 48:17-20

When Joseph saw that his father put his right hand on Ephraim’s head, he didn’t like it. So he took hold of his father’s hand, wanting to move it from Ephraim’s head to Manasseh’s head. Joseph said to his father, “You are doing it wrong, Father. Manasseh is the firstborn son. Put your right hand on his head.” But his father refused and said, “I know, my son, I know. Manasseh will be great and have many descendants. But his younger brother will be greater, and his descendants will be enough to make a nation.” So Israel blessed them that day and said, “When a blessing is given in Israel, they will say: ‘May God make you like Ephraim and Manasseh.’ ” In this way he made Ephraim greater than Manasseh.