The Reformation progressed strongly in the Swiss city of Zurich. Following the logic of the prohibition in the Ten Commandments on ‘making graven images’, enthusiastic citizens began to destroy religious statues. Study of the New Testament led some to conclude that the apostles had baptized believing adults—not newborn babies. In accordance with this, in January 1525 a small group of Zurichers first baptized themselves and then others. Since all had been baptized as babies,