Genesis 48
17 Ref Now when Joseph saw that his father had put his right hand on the head of Ephraim, it did not seem right to him; and lifting his father's hand he would have put it on the head of Manasseh.
18 Ref And Joseph said to his father, Not so, my father, for this is the older; put your right hand on his head.
19 Ref But his father would not, saying, I am doing it on purpose, my son; he will certainly become a nation and a great one; but his younger brother will be greater than he, and his seed will become a great family of nations.