Ulrich Zwingli: Prophet, Heretic, Pioneer of Protestantism - Hardcoverby Peter Opitz (Author) Ulrich Zwingli can be regarded as the father of the Reformed Church and Reformed theology. He stands at the beginning of the Reformed confessional tradition, and many Reformers like Martin Bucer, Heinrich Bullinger, and John Calvin were heavily influenced by his views. Nevertheless, he is lesser known than Luther and Calvin. For one thing, many of his works are written in the Swiss German of the sixteenth century. Further, the