Christian Millennialism is a belief system within Christianity that focuses on the Millennium, a prophesied 1,000-year reign of Christ on Earth. This concept is primarily derived from the Book of Revelation in the New Testament, where it describes a time of peace and righteousness following the second coming of Jesus. There are different interpretations of Millennialism, including Premillennialism, which holds that Christ will return before the Millennium, and Postmillennialism, which suggests that Christ will return after this period of peace. These views influence how believers understand the end times and their role in the world today.