NET
31 Jacob said, “Swear to me that you will do so.” So Joseph gave him his word. Then Israel bowed down at the head of his bed.
Darby
31 And he said, Swear to me; and he swore to him. And Israel worshipped on the bed's head.
KJV
31 And he said, Swear unto me. And he sware unto him. And Israel bowed himself upon the bed's head.