Alright, the tenth article of faith is pretty interesting. I’ll try to explain it as best I can.
We believe in the literal gathering of Israel and in the restoration of the Ten Tribes; that Zion (the New Jerusalem) will be built upon the American continent; that Christ will reign personally upon the earth; and, that the earth will be renewed and receive its paradisiacal glory.
The literal gathering of Israel and the restoration of the Ten Tribes refer to what is known as the Assyrian captivity of Israel. In the Old Testament, the twelve tribes of Israel became divided into the Kingdom of Israel (Northern Kingdom) and the Kingdom of Judah (Southern Kingdom). The Kingdom of Judah consisted of the tribes of Judah and Benjamin, while the Northern Kingdom consisted of the rest. Around 740 B.C., the Northern Kingdom was conquered by the Assyrian Empire. About 150 years later, Judah suffered the same fate by the hands of the Babylonians.
Judah has been restored to its homeland. The ten tribes of the Northern Kingdom, however, have not. They are still lost, scattered around the world, but will one day return.
Zion, the New Jerusalem is mentioned in Revelation 21:2 – And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
Through modern revelation, Latter-day Saints believe that Zion will be built upon the American continent, and that ‘Old’ Jerusalem will also be rebuilt.
During the millennium, Christ will reign personally upon the earth, which will be renewed and receive its paradisiacal glory. No more wars or rumors of wars. No more worldly governments. No more starvation, sickness, or disease. No more sin or corruption. No more Satan. Jesus Christ will reign. The government will be upon His shoulders, as the prophet Isaiah writes. He will be our King, our Ruler, and He will be among us.