By the 15th century, the villages of the valley were part of the large parish of Gsteig bei Interlaken (now part of Gsteigwiler). Between 1487 and 1488, the villagers in Lauterbrunnen built a filial church of the parish. In 1506, the parish appointed a full-time priest for Lauterbrunnen. In 1528, the city of Bern adopted the new faith of the Protestant Reformation and began imposing it on the Bernese Oberland. Lauterbrunnen joined many other villages and the Monastery in an unsuccessful rebellion against the new faith. After Bern imposed its will on the Oberland, they secularized the Monastery and annexed all the Monastery lands. Lauterbrunnen became the center of a new Reformed parish.