what does the bible say?
Millenarianism (sometimes called chiliasm in early Christian writings) is the belief that Jesus Christ will reign on earth for a literal thousand years after His return. The idea is based on Revelation 20:1–6, where John sees Satan bound for a thousand years so he cannot deceive the nations, while believers who had been martyred earlier come to life and reign with Christ. After this period, Satan will be briefly released for one final rebellion before his ultimate defeat and eternal judgment (Revelation 20:7–10).
Note that Christians vary in how they interpret this thousand-year reign. Premillennialists see the passage as a literal earthly kingdom established after Christ’s second coming, often connecting it with Old Testament promises to Israel (Isaiah 2:2–4; 11:6–9; Ezekiel 37:24–28). Amillennialists interpret the millennium symbolically, representing Christ’s current spiritual reign in believers' hearts and in heaven. Postmillennialists view it as a future time of gospel success before Christ’s return. While a literal understanding aligns most closely with the straightforward reading of Scripture, regardless of interpretation, Revelation 20 points to Christ’s certain victory, the final defeat of evil, and the completion of God’s redemptive plan.