'Right hand' in the Bible

Then taking Ephraim with his right hand, Joseph put him at Israel's left side, and with his left hand he put Manasseh at Israel's right side, placing them near him.

And Israel, stretching out his right hand, put it on the head of Ephraim, the younger, and his left hand on the head of Manasseh, crossing his hands on purpose, for Manasseh was the older.

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.

And Joseph said to his father, Not so, my father, for this is the older; put your right hand on his head.