The mid-nineteenth century is a gold mine for contemporary scholars interested in American Protestant ecclesiology. There one will find the extensive writings of John Nevin who came to the notice of the theological world with The Anxious Bench, a critique of the ""quackery"" of Protestant revivalism. Influenced by a critical appropriation of cutting-edge contemporary German theology, he came to believe that the church was not ""invisible,"" but the visible manifestation of Jesus Christ's incarnate life. Christians were to pursue unity, not in external institutional arrangements, but as unity of spiritual life. This compilation presents his theology of the catholicity of the church prior to his masterwork, The Mystical Presence, and a multifaceted, sophisticated critique of American sectarianism. This edition carefully preserves the original texts while providing extensive introductions, annotations, and bibliography. The Mercersburg Theology Study Series presents for the first time attractive, readable, scholarly modern editions of the key writings of the nineteenth-century movement known as the Mercersburg Theology. An ambitious multi-year project, it aims to make an important contribution to the academic community and to the broader public, who can at last be properly introduced to this unique blend of American and European Reformed and Catholic theology. ""Nevin's understanding of the mission of the church is as counter-cultural and relevant today as in the nineteenth century. By making Nevin accessible, Sam Hamstra offers church leaders a thoughtful, provocative dialogue partner to imagine faithful ministry today."" --David Rylaarsdam, Calvin Seminary Sam Hamstra Jr. is the Affiliate Professor of Church History and Worship at Northern Seminary. He is the editor of several studies, most recently The Reformed Pastor: Lectures on Pastoral Theology by John Williamson Nevin, and has authored several works on worship, including What's Love Got to Do With It? How the Heart of God Shapes Worship. John Williamson Nevin (1803-1886), was a professor successively at Western Theological Seminary, the Theological Seminary of the German Reformed Church at Mercersburg, and Franklin and Marshall College. He was a leading nineteenth-century theologian and founding editor of Mercersburg Review.