Genesis 48:17-19

ISV(i) 17 But Joseph observed that his father had laid his right hand on Ephraim’s head. That displeased him, so he grabbed his father’s hand and started to move it from Ephraim’s head to Manasseh’s head. 18 “No, father, this one is the firstborn. Place your right hand on his head.”
19 But his father refused. “I know,” he said. “I know. He’s going to produce a large nation, and he’s going to be very great. However, his younger brother will become even greater than he, and his descendants will become a multitude of nations.”