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Why is postmillennialism often associated with gradual social reform?

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millennialism Vision of the New Jerusalem coming down from heaven, from the Bamberg Apocalypse, c. 1000–20; in the Bamberg State Library, Germany (MS. 140).

Postmillennialism is a theological doctrine asserting that the Second Coming of Christ will occur after a millennium of peace and righteousness, which is to be inaugurated by the efforts of an inspired humanity. Because postmillennialists believe that the kingdom of God can be established on earth through human action and divine guidance, the doctrine is inherently activist and optimistic.123

This perspective fosters an association with gradual social reform because adherents view history as a process of improvement. Unlike premillennialism—which often views the world as too corrupted by evil to be improved and thus emphasizes personal repentance while awaiting a catastrophic divine intervention—postmillennialism encourages believers to actively engage in societal transformation.32

By working to reform institutions and address social ills, postmillennialists believe they are participating in the gradual realization of God’s kingdom. This reformist spirit has historically fueled various activist movements, including the Social Gospel, Prohibition, and the fight for suffrage.32