Michael Sattler, a significant figure in the early Anabaptist movement, was born in the late 15th century. Though little is known about his early life, he eventually became a Benedictine monk, dedicating himself to religious study and monastic discipline. However, as the Protestant Reformation spread across Europe, new theological ideas challenged the established teachings of the Catholic Church. Sattler, like many other reformers of his time, began to question traditional doctrines, seeking a purer and more personal form of Christianity. This spiritual journey led him to embrace Anabaptism, a radical Christian movement that rejected infant baptism and emphasized adult believers' baptism, separation from state authorities, and a commitment to nonviolence.

Sattler’s growing Anabaptist convictions made him a target of both Catholic and Protestant authorities, who viewed the movement as a dangerous challenge to religious and social order. Persecution of Anabaptists was widespread, especially in cities like Zurich, where the movement had gained an early foothold. Realizing the dangers he faced; Sattler was forced to flee Zurich in search of safety. His journey took him to Strasbourg, a city that had become a refuge for many religious dissenters. There, he connected with other reformers, further developing his theological ideas and strengthening his commitment to Anabaptist principles.

Eventually, Sattler and a small group of fellow believers settled in the Black Forest region, an area offering relative seclusion and safety. It was here, in 1527, that Sattler played a crucial role in drafting what would become the Schleitheim Confession, the first known formal declaration of Anabaptist beliefs. This document outlined seven core principles, including adult baptism, rejection of military service, separation from the worldly government, and the practice of church discipline. The Schleitheim Confession became a foundational text for the Anabaptist movement, setting it apart from both Catholic and Protestant traditions and solidifying its theological identity.

Despite his efforts to live peacefully, Sattler's teachings and influence drew the attention of local authorities, who viewed Anabaptism as a subversive and heretical movement. In May 1527, he was arrested along with several of his followers. The authorities subjected him to a brutal trial, during which he defended his beliefs with unwavering conviction. Found guilty of heresy, Sattler was sentenced to death in one of the most horrific ways imaginable.

On May 21, 1527, Michael Sattler was executed in Rottenburg am Neckar. He was first subjected to gruesome torture, with his tongue cut out and red-hot tongs used to tear his flesh. Finally, he was tied to a stake and burned alive. His steadfastness in the face of such suffering left a lasting impression on both his followers and his persecutors. His wife, Margaretha, and other Anabaptists who stood by his side were also executed shortly after.

Though his life was cut short, Michael Sattler’s legacy endured. The Schleitheim Confession continued to guide the Anabaptist movement, influencing groups such as the Mennonites and the Hutterites. His martyrdom became a powerful symbol of religious conviction, inspiring generations of believers who sought to live out their faith despite persecution. Today, he is remembered as a courageous leader whose commitment to his beliefs, even in the face of death, helped shape the course of Anabaptist history.