Ezekiel 37:16-17

16 “Son of man, take a stick of wood and write on it, ‘Belonging to Judah and the Israelites associated with him.’ Then take another stick of wood, and write on it, ‘Belonging to Joseph (that is, to Ephraim) and all the Israelites associated with him.’
17 Join them together into one stick so that they will become one in your hand.