Ezekiel 37:18-19

18When your people ask you, ‘Won’t you explain to us what you mean by these?’ 19you are to tell them that this is what the Lord GOD says: ‘I will take the stick of Joseph, which is in the hand of Ephraim, and the tribes of Israel associated with him, and I will put them together with the stick of Judah. I will make them into a single stick, and they will become one in My hand.’