
author
1555–1621
A major voice in early Lutheran devotion, he wrote books that urged Christians to move beyond formal belief into a deeply lived faith. His best-known work, True Christianity, was widely read and helped shape later Protestant spirituality.
Born in late 1555 in what is now Germany, Johann Arndt became a Lutheran pastor, theologian, and devotional writer during the generations after the Reformation. He studied at several universities and served in church posts before ending his career in Celle, where he died in 1621.
Arndt is best remembered for True Christianity (Vom wahren Christentum), a work that called readers to repentance, prayer, and a life visibly transformed by Christ. His writing stressed inward renewal as well as correct doctrine, which made it especially influential among readers who wanted religion to touch everyday life.
Because of that emphasis, later generations often saw him as an important forerunner of Pietism. Even centuries later, his books have remained part of the classic tradition of Protestant devotional reading.