Authors — S

Thomas R. Schreiner is James Buchanan Harrison Professor of New Testament Interpretation at The Southern Baptist Theological Seminary. A prolific New Testament scholar and committed Calvinist, his commentaries on Romans, Galatians, and 1–2 Peter, as well as his systematic studies on election and the law, are widely used in Reformed Baptist circles.

Brian M. Schwertley is a minister in the Covenanted Reformed Presbyterian tradition who has written extensively on the regulative principle of worship and Reformed ecclesiology. His major work, Sola Scriptura and the Regulative Principle of Worship, is regarded as the most detailed contemporary defense of the confessional Reformed position on worship.

W. G. T. Shedd (1820–1894) was an American Reformed theologian who taught at Andover, Auburn, and Union Theological Seminary in New York, where he held the chair of Systematic Theology for many years. His three-volume Dogmatic Theology is a rigorous defense of Calvinist orthodoxy drawing on Augustine, Calvin, and the Westminster standards.

Thomas Shepard (1605–1649) was an English Puritan minister who fled Archbishop Laud's persecution to become pastor of the first church in Cambridge, Massachusetts. A leading voice against Antinomianism during the Hutchinson controversy, he is remembered for his searching writings on saving grace, including The Sincere Convert and The Sound Believer.

Richard Sibbes (1577–1635) was an Anglican Puritan who lectured at Holy Trinity Church, Cambridge, and served as preacher at Gray's Inn and Master of St Catharine's Hall. He is beloved for his warm, Christ-centered devotional writings, especially The Bruised Reed and Smoking Flax (1630), which influenced Spurgeon and Lloyd-Jones among countless others.

George Smeaton (1814–1889) was a Scottish Free Church theologian who taught at New College, Edinburgh. His two volumes on the doctrine of the atonement — one focused on the testimony of Christ, the other on the testimony of the apostles — are considered the most thorough Reformed treatments of the atonement from the nineteenth century.

Charles H. Spurgeon (1834–1892) was the most celebrated preacher of the Victorian era — a thoroughgoing Calvinist whose sixty-three volumes of sermons and dozens of books have made him one of the most widely read Protestant authors in history.

William Symington (1795–1862) was a Scottish Reformed Presbyterian minister and theologian who pastored in Stranraer and Glasgow and later served as professor of theology for the Reformed Presbyterian Church of Scotland. He is best known for Messiah the Prince (1839), a landmark defense of Christ's mediatorial kingship over the nations.