Anabaptism (from Neo-Latin anabaptista, from the Greek ἀναβαπτισμός: ἀνά- "re-" and βαπτισμός "baptism") is a Christian movement which traces its origins to the Radical Reformation in Europe. The movement is generally seen as an offshoot of Protestantism, although this view has been challenged by some Anabaptists.
Anabaptists are Christians who believe that baptism is valid only when the candidate confesses his or her faith in Christ and wants to be baptized. This believer's baptism is opposed to baptism of infants, who are not able to make a conscious decision to be baptized. Anabaptists are those who are in a traditional line with the early Anabaptists of the 16th century. Other Christian groups with different roots also practice believer's baptism, such as Baptists, but these groups are not seen as Anabaptist. The Amish, Hutterites, and Mennonites are direct descendants of the early Anabaptist movement. Schwarzenau Brethren, Bruderhof, and the Apostolic Christian Church are considered later developments among the Anabaptists.
The name Anabaptist means "one who baptizes again". Their persecutors named them this, referring to the practice of baptizing persons when they converted or declared their faith in Christ, even if they had been "baptized" as infants. Anabaptists required that baptismal candidates be able to make a confession of faith that is freely chosen and so rejected baptism of infants. The early members of this movement did not accept the name Anabaptist, claiming that infant baptism was not part of scripture and was therefore null and void. They said that baptizing self-confessed believers was their first true baptism:
I have never taught Anabaptism.... But the right baptism of Christ, which is preceded by teaching and oral confession of faith, I teach, and say that infant baptism is a robbery of the right baptism of Christ.
Anabaptists were heavily persecuted during the 16th century and into the 17th century by both Magisterial Protestants and Roman Catholics, largely because of their interpretation of scripture which put them at odds with official state church interpretations and with government. Most Anabaptists adhered to a literal interpretation of the Sermon on the Mount which precluded taking oaths, participating in military actions, and participating in civil government. Some groups who practiced rebaptism felt otherwise (though they are now extinct) and complied with these requirements of civil society. They were thus technically Anabaptists, even though conservative Amish, Mennonites, Hutterites, and some historians consider them outside true Anabaptism. Conrad Grebel wrote in a letter to Thomas Müntzer in 1524:
True Christian believers are sheep among wolves, sheep for the slaughter... Neither do they use worldly sword or war, since all killing has ceased with them....LESS