Original Verse:
Genesis Chapter 48 Verse 14And Israel stretched out his right hand, and laid it upon Ephraim`s head, who was the younger, and his left hand upon Manasseh`s head, guiding his hands wittingly; for Manasseh was the first-born.

Reference Verses:
Genesis Chapter 41 Verse 51-52 [51] And Joseph called the name of the first-born Manasseh: For, [said he], God hath made me forget all my toil, and all my father`s house. [52] And the name of the second called he Ephraim: For God hath made me fruitful in the land of my affliction.
Numbers Chapter 2 Verse 18On the west side shall be the standard of the camp of Ephraim according to their hosts: and the prince of the children of Ephraim shall be Elishama the son of Ammihud.