Presbyterian polity
In theology he followed Huldrych Zwingli, and at the sacramentarian conferences of Heidelberg (1560) and Maulbronn (1564) he advocated by voice and pen the Zwinglian doctrine of the Lord's Supper, replying in 1565 to the counter-arguments of the Lutheran Johann Marbach, of Strasbourg. He ineffectually resisted the efforts of the Calvinists, led by Caspar Olevian, to introduce the Presbyterian polity and discipline, which were established at Heidelberg in 1570, on the Geneva model.