There is a theory out there called “The Two-House Theory” that misinterprets Ezekiel chapter 37 to say the following:
The Two House (Two Sticks in Ezekiel's language) theory basically states that there are two Houses that make up Israel, the House of Judah and the House of Ephraim/Joseph. The House of Judah is the Jewish people. The House of Ephraim or House of Joseph (take your pick) are the descendents of the Ten Lost Tribes who have become the Christians of the West. The two houses will one day join together (not one into another, not one subjugated to another, and not one eliminated in favor of the other) into a New House (One Stick in Ezekiel's language) that pleases G-d with its true worship. Both Houses currently are in error in some matters. Judah will bring with it its Torah obedience, and Ephraim will bring with it its knowledge of Yeshua HaMashiach (Jesus Christ).
The idea that the Church is involved in this passage borders on replacement theology. This is a grave error and can lead to the beliefs of cult groups like the Mormons, and the Worldwide Church of G-d.
The Mormons are teaching anglo-Israelism.
Anglo-Israelism received new life in this century through its popularization by the late Herbert W. Armstrong’s Worldwide Church of G-d. As a cornerstone of his theology, Armstrong adopted Anglo-Israelism. Bob Larson comments,
It was Armstrong’s belief in Anglo-Israelism that drew the most theological attention. Though Herbert denied it, his doctrine closely resembled the theory expounded by Canadian Richard Brothers, a physic visionary who lived in London in the eighteenth century…Ignoring sound rules of linguistics and hermeneutics, the theory suggests that England (supposedly the inferior] Manasseh) are what is left of the so-called Ten lost Tribes of Israel. Ancient Judah and Israel are believed to [still] be two separate entities…After the Assyrian captivity, Israel [presumably] migrated northward to eventually become the Anglo-Saxons of British heritage.
Armstrong taught that the promises of G-d due to his chosen people have been transferred to America and the United Kingdom. He also declared that Queen Elizabeth [II] sits on the throne to which Christ will return. [The] WCG maintains that the British Coronation Stone of Scone was actually brought to the Emerald Isle by the prophet Jeremiah.
Ez. 37:24-28 "And My servant David will be king over them, and they will all have one shepherd; and they will walk in My ordinances, and keep My statutes, and observe them. "And they shall live on the land that I gave to Jacob My servant, in which your fathers lived; and they will live on it, they, and their sons, and their sons' sons, forever; and David My servant shall be their prince forever. "And I will make a covenant of peace with them; it will be an everlasting covenant with them. And I will place them and multiply them, and will set My sanctuary in their midst forever. "My dwelling place also will be with them; and I will be their G-d, and they will be My people. "And the nations will know that I am the L-RD who sanctifies Israel, when My sanctuary is in their midst forever."' " (NAS)
This is a messianic prophecy. It is understood that this will be a descendent of David that will be king over them. Yeshua HaMashiach!Isa 9:6-7 For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counselor, The mighty G-d, The everlasting Father, The Prince of Peace. Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth-even forever. The zeal of the L-RD of hosts will perform this.
This is a literal kingdom where Yeshua will reign from His throne in Jerusalem.