Genesis 48:12-14

12Joseph moved the boys, who were at their grandfather’s knees, and he bowed with his face to the ground.

13Then he positioned the boys in front of Jacob. With his right hand he directed Ephraim toward Jacob’s left hand, and with his left hand he put Manasseh at Jacob’s right hand.

14But Jacob crossed his arms as he reached out to lay his hands on the boys’ heads. He put his right hand on the head of Ephraim, though he was the younger boy, and his left hand on the head of Manasseh, though he was the firstborn.