Saint Walpurga
The Reformation in Nassau-Weilburg was accelerated after Philip joined the Schmalkaldic League. Philip ordered the dissolution of the small Pfannstiel monastery and the sale of some valuable liturgic vessels from the Benedictine Abbey of Saint Walpurga in Weilburg. In 1540, Philip founded a free school in Weilburg, which quickly became a center of education. It was the forerunner of today's Gymnasium Philippinum Weilburg.