Millennialism
Belief in a thousand-year earthly kingdom before final judgment.
Millennialism (from Latin mille 'thousand', annus 'year' and -ism) or chiliasm (from the Greek equivalent) is a belief held by some religious denominations that a Messianic Age, the so-called Christian Millennium, will be established on Earth prior to the Last Judgment and the future permanent state of eternity. Christianity and Judaism have both produced messianic movements featuring millennialist teachings, often leading to considerable social unrest. Similarities also exist in Zoroastrianism, which identified successive thousand-year periods ending in cataclysm until the final destruction of evil.
- field
- Religious eschatology
- known_for
- Belief in a thousand-year earthly reign of Christ or a Messianic Age before the final judgment
- key_texts
- Book of Revelation, especially Revelation 20
- major_forms
- Premillennialism, Postmillennialism, Amillennialism
- related_traditions
- Christianity, Judaism, Zoroastrianism
Lore & Background
Most Christian millennialist thinking is based upon the Book of Revelation, specifically Revelation 20, which describes an angel capturing Satan and imprisoning him for a thousand years, after which he is released briefly. The passage also describes souls of martyrs coming to life and reigning with Christ for a thousand years in a 'first resurrection.' During the early church, various forms of chiliasm were found, with historic premillennialism supported by figures such as Papias, Irenaeus, Justin Martyr, Tertullian, and others. However, the premillennial views of Montanus, considered a heresy, likely contributed to later rejection of premillennialism.
Reader's Guide
Millennialism has shaped Christian eschatology for centuries, with three main interpretations emerging: Premillennialism (Christ returns before the millennium), Postmillennialism (Christ returns after the millennium), and Amillennialism (the millennium is metaphorical and currently realized through the church). The Catholic Church has strongly condemned millennialism, especially its 'intrinsically perverse' political form of secular messianism. In the 19th and 20th centuries, millennialist movements included the Bible Student movement, Jehovah's Witnesses, The Church of Almighty God, and the New Apostolic Reformation. Scholars have linked various social and political movements, both religious and secular, to millennialist metaphors. The 2026 Iran war saw reports of U.S. military personnel framing the conflict in millennialist terms, with some claiming officers told soldiers the conflict was 'all part of God’s divine plan' and that 'President Trump has been anointed by Jesus to light the signal fire.'
Did You Know?
- The term 'millennialism' comes from Latin mille 'thousand' and annus 'year'; the Greek equivalent is 'chiliasm'.
- Zoroastrianism identified successive thousand-year periods, each ending in a cataclysm, until the final destruction of evil.
- Justin Martyr (died 165) noted that many true Christians held differing views on millennialism, while he and others believed in premillennialism.
- The Catholic Church has rejected millenarianism, especially its 'intrinsically perverse' political form of secular messianism.
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