Ezekiel 37:22-24

22and I will make them one nation in the land, on the mountains of Israel; and one king will be king over all of them; and they will no longer be two nations, and will no longer be divided into two kingdoms.

23They will no longer defile themselves with their idols, or with their detestable things, or with any of their transgressions; but I will save them from all their transgressions in which they have sinned, and I will cleanse them. So they will be My people, and I will be their God.

24“My servant David will be king over them, and they all will have one shepherd. They will also walk in My ordinances and keep My statutes and observe them.