Two key concepts for understanding Amish practices are their rejection of Hochmut (pride, arrogance, haughtiness) and the high value they place on Demut (humility) and Gelassenheit (calmness, composure, placidity), often translated as "submission" or "letting-be". Gelassenheit is perhaps better understood as a reluctance to be forward, to be self-promoting, or to assert oneself. The Amish's willingness to submit to the "Will of Jesus", expressed through group norms, is at odds with the individualism so central to the wider American culture. The Amish anti-individualist orientation is the motive for rejecting labor-saving technologies that might make one less dependent on community. Modern innovations like electricity might spark a competition for status goods, or photographs might cultivate personal vanity. They believe in the importance of individual Bible study and the necessity of living a life free of sin after adult baptism. The Pennsylvania Amish are a private people who believe that God has called them to a simple life of faith, discipline, dedication and humility. They believe that the Amish religion should be practiced, not displayed, and translated into daily living rather than focused on tangible symbols or complicated religious rituals. Their belief is that God has a personal and abiding interest in their lives, families and communities is the force that holds them together in spite of the pressures of the outside world. The Amish church service is an act of worship, a preservation of tradition, a renewal of faith, and an affirmation of community. Communities are divided into church districts geographically, which enables services to be held in church members' homes, as opposed to designated church buildings. Services are conducted every other Sunday, with each family in a district hosting neighbors for worship about once a yearWell over 400 years old, the Ausbund is one of the most famous and important books to the Pennsylvania Amish. First published in German in 1564 shortly after the Reformation, it is reported to be the oldest Protestant hymnal in continuous use. With hymns added over the years, editions today contain nearly 900 pages. The Ausbund is important for many reasons, but most notably for the religious tradition that it preserves. The core of the book consists of about 50 hymns written mostly by 16th century German Anabaptists, many imprisoned in castle dungeons for their religious beliefs. Therefore, the tone of many hymns is one of great sorrow, loneliness or protest against the world of wickedness.