Millennialism is a belief system centered around the idea that a significant transformation of society will occur, often linked to the return of a messianic figure. This concept is particularly prominent in certain interpretations of Christianity, where it is associated with the Book of Revelation and the idea of a thousand-year reign of Christ on Earth, known as the Millennium. In addition to religious contexts, millennialism can also refer to secular movements that anticipate a major change in social or political structures. These movements often envision a future where justice, peace, and prosperity prevail, reflecting a deep desire for improvement in the human condition.