Editing Jakob Ammann (section)

== Theology and practice ==
Because of scarcity of materials, very little is known of Jakob Ammann’s teaching and day-to-day life. Three letters comprise the whole of his first-hand accounts of his thoughts.{{Efn | This sparsity is probably due to his inability to write.  The extant letters were probably dictated.}} Other letters accuse Jakob of teaching or holding various viewpoints, but since many of these letters were written by his opponents it is not clear how much bias the accusations contain.

From Jakob’s letters, it can be learned that he was a firm disciplinarian, uncompromising in what he believed, and expected others to "conform to the teachings of Christ and His apostles". His rejection of the "good-hearted" stemmed from his belief that whoever accepted the "true saving faith" would be baptized upon that faith, cost what it may. They would "forsake the world" and practise a very practical separation in their everyday life. Jakob was willing to disregard longstanding customs and practices if they were not founded on God’s Word. He denied that he was trying to start a "new faith". He believed in a new birth experience that would radically change a person. He wrote:
{{Quote | If a miser does not turn from his fornication, and a drunkard from his drunkenness, or other immoralities, they are thereby separated from the kingdom of God, and if he does not improve himself through a pious, penitent life, such a person is no Christian and will not inherit the Kingdom of God.<ref name= "Letters Roth" />{{rp|34}}}}

In practical matters, he stood opposed to long hair on men, shaved beards, and clothing that manifested pride. Liars were to be excommunicated.<ref name= "Letters Roth" />{{rp|27–45}} Ammann, unlike most Amish married men of today, however, had a [[mustache]],{{Citation needed |date= March 2013}} which is largely forbidden today in the faith.<ref>{{cite book|last = Kraybill | first = Donald| title = Concise Encyclopedia of Amish, Brethren, Hutterites, and Mennonites| publisher = The Johns Hopkins University Press | year = 2010| isbn =978-0-80189657-6| page =24}}</ref>