One of the most articulate and biblically grounded voices of the Radical Reformation, Peter Riedemann was only twenty-three when he penned this impassioned confession of faith in the gloom of a sixteenth-century Austrian dungeon. Already a noted Anabaptist leader, Riedemann called fellow persecuted Christians to witness to a love that, “when it really burns, having kindled our eagerness for God, the more temptations and tribulations meet it, the more it flares, until it overcomes and consumes...