John Calvin's ministry and devotion to the Reformation began in Geneva. During his time in Geneva he helped establish the procedure and guidelines for the city and leadership to be governed by a theocracy. In 1538 Calvin and his colleague Farel were exiled from Geneva for failing to properly celebrate Communion. John Calvin then moved to Strasbourg, France, where he served for three years. John Calvin was finally persuaded to return to Geneva in September 1541. It took John Calvin almost 14 years before he could fully implement his doctrines and beliefs in the church. John Calvin believed that there was nothing more important in a church service than preaching the Scriptures. He also believed that singing hymns and psalms was extremely important, but he banned musical instruments from churches. John Calvin believed that music distracted the faithful from the true search for God. John Calvin continued to preach and advocate the Reformation from Geneva until his death in May 26,