Amish religious practices are reflective of traditional Anabaptist Christian theology. The Old Order Amish typically have worship services every second Sunday in private homes. The typical district has 80 adults and 90 children under age 19. Worship begins with a short sermon by one of several preachers or the bishop of the church district, followed by scripture reading and prayer (this prayer is silent in some communities), then another, longer sermon. The service is interspersed with hymns sung without instrumental accompaniment or harmony. This is meant to put the emphasis on what is said, not how it is being said. Many communities use an ancient hymnal known as the Ausbund. The hymns contained in the Ausbund were generally written in what is referred to as Early New High German, a predecessor to modern Standard German. Singing is usually very slow, and a single hymn may take 15 minutes or longer to finish. In Old Order Amish services, scripture is either read or recited from the German translation of Martin Luther. Worship is followed by lunch and socializing. Church services are conducted in a mixture of Standard German (or 'Bible Dutch') and Pennsylvania German. Amish ministers and deacons are selected by lot out of a group of men nominated by the congregation. They serve for life and have no formal training. Amish bishops are similarly chosen by lot from those selected as preachers. The Old Order Amish do not work on Sunday, except to care for animals. Some congregations may forbid making purchases or exchanging money on Sundays. Also, within some congregations a motor vehicle and driver may not be hired on Sunday, except in an emergency. Congregations and districts The majority of Old Order Amish congregations do not have church buildings but hold worship services in private homes. Thus they are sometimes called "House Amish." This practice is based on a verse from the New Testament: "The God who made the world and all things in it, since He is Lord of heaven and earth, does not dwell in temples made with hands…" (Acts 17:24). In addition, the early Anabaptists, from whom the Amish are descended, were religiously persecuted, and it may have been safer to pray in the privacy of a home. Unlike other church congregations whose membership is based on whoever visits, stays and joins, the Amish congregations are based on the physical location of their residence. Contiguous