Balthasar Hubmaier was a leading Anabaptist Reformer in the Sixteenth century. His writings provided a framework from which later Anabaptists worked, especially his explanation of the doctrine of believer's baptism. The Anabaptist view of salvation and discipleship was dependent on an affirmation of free will. This book shows that Hubmaier was one of the relatively unheralded champions of free will, especially in the Reformation era of Church History.