In essence, he took Martin Luther's protest to the logical conclusion that individual freedom of conscience should be enshrined in law.
A soul cannot be saved by force, but only by moral persuasion that leads to a conscious decision to embrace salvation.
Baptism must be willingly chosen by an adult who understands the meaning of the act.
The protest also criticized Martin Luther's reformation by claiming that the sacrifice of Jesus is not in itself sufficient atonement for sin, especially the sins of people who lived long after Christ and who had no influence on the events of the past.
In other words, belief in Jesus must entail following the guidance of Christ in one's own life.