Genesis 48:17-20

When Joseph saw that his father laid his right hand on Ephraim’s head, it displeased him; and he grasped his father’s hand to remove it from Ephraim’s head to Manasseh’s head. Joseph said to his father, “Not so, my father, for this one is the firstborn. Place your right hand on his head.” But his father refused and said, “I know, my son, I know; he also will become a people and he also will be great. However, his younger brother shall be greater than he, and his descendants shall become a multitude of nations.” He blessed them that day, saying, “By you Israel will pronounce blessing, saying, ‘May God make you like Ephraim and Manasseh!’ ” Thus he put Ephraim before Manasseh.