This volume is a collection of essays on the Heidelberg Catechism by John Nevin, a principal representative of the Mercersburg Theology that was birthed in nineteenth-century Pennsylvania. It also contains a critical response by John Proudfit, a more traditionally scholastic Calvinist. In these essays Nevin argued that the Heidelberg Catechism is an essential irenic confessional document that encapsulates the Reformed tradition and also builds bridges...