In his sermon "On Dress", John Wesley, the founder of the Methodist movement, expressed his desire for Methodists to wear plain clothing in the manner practiced by Quakers: "Let me see, before I die, a Methodist congregation, full as plain dressed as a Quaker congregation." Peter Cartwright, a Methodist revivalist, noted the gradual decline of wearing plain dress among Methodists; today, members of denominations in the conservative holiness movement, such as the Allegheny Wesleyan Methodist Connection and Evangelical Wesleyan Church, continue to dress plainly, sometimes including abstention of wearing of jewelry, such as wedding rings. Traditional Adventists and Mormon Fundamentalists also wear plain dress. Customs of Plain people include:  Anabaptist Plain groups typically have a bishop presiding over one congregation (Amish) or over a district (group of congregations) (Old Order Mennonites). Mennonites mostly meet in church buildings, but most Amish meet in members' homes. Services among Amish and Plain Mennonites are mostly held in Pennsylvania German, a language closely related to Palatinate German, with extra vocabulary. Bishops are commonly chosen by lot as a reflection of God's will. While the Bishop tends to be influential, he tends to rule by building consensus rather than by issuing edicts. Most Anabaptist Plain groups have an Ordnung that among other things regulates clothing. The Ordnung is a largely unwritten code of behavior, covering such items as clothing, vehicles, and the use of technology. The Ordnung varies slightly from congregation to congregation, though is in essence the same. Violations are not considered sins, although pride, selfishness and wilfulness are considered to be a serious violation of the faith. The congregation can change the Ordnung if there is a majority who desire to do so. Exemptions to the Ordnung can be provided. In one instance, one farmer was granted permission to buy a modern tractor since he had arthritis and no children to help him harness horses. In other very hot, dry areas such as the Southwest, some provision has been made for mechanical plowing and harvesting, in areas where horses may not be able to work hard in the field all day long. The Old Order Amish are among the fastest-growing populations in the world. They have low infant mortality rates. The average Amish woman can expect to have at least seven live births. Other Plain sects with the same or similar doctrines can be expected to have similarly explosive growth.