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Prussian Union

German religious history [1817]

Quick Summary

The Prussian Union, established in 1817, was a directive by King Frederick William III of Prussia that merged the Lutheran and Reformed churches within his kingdom. This union was driven by the king's belief that the theological differences between the two denominations were minor and by his desire for administrative centralization, mirroring reforms in the Prussian government.12

While some embraced the union, others fiercely opposed it, leading to suppression and emigration. The merger became a pattern for many Protestants in Germany, though distinct Reformed churches persist in northwestern Germany. The union's legacy is complex, with ongoing debates about doctrinal versus administrative unity, and it reflects broader trends within 19th-century German theology, which was divided between liberal, confessional, and mediating schools of thought.13

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