Premillennialism
Premillennialism, in Christian eschatology, is the belief that Jesus will physically return to the Earth (the Second Coming) before the Millennium, heralding a literal thousand-year messianic age of peace. Premillennialism is based upon a literal interpretation of Revelation 20 (Revelation 20:1–6) in the New Testament, which describes Jesus's reign in a period of a thousand years.