As one of the most remarkable of the Scottish Covenanters, George Gillespie had a reputation in England and Scotland as an orthodox Puritan theologian and apologist for Scottish Presbyterianism. He was well known for his controversial works attacking the ceremonies of the Church of England, defending Presbyterianism, opposing religious toleration, and combating Erastianism. He is best remembered as one of the Scottish Commissioners to the Westminster Assembly in London, which sought to reform the English Church and establish a uniform religion for the two kingdoms. This study assesses his life, ideas, and legacy. In Gillespie's estimation revelation and reason played complementary roles in the Christian life. While the Fall had affected man's reasoning abilities, man could rely upon natural law and scholarship as long as one kept them within the limits of God's truth revealed in Scripture. Moreover, he insisted that the church structure its worship ceremonies, government, and discipline according to the pattern set forth in the Bible. In addition, he emphasized the central role of God's Word and the sacraments in the worship of God and stressed the importance of cultivating personal piety. At the heart of Gillespie's political thought lay the Melvillian theory of the two kingdoms, which led him to reject Erastianism as subordinating the church to the power of the state. Furthermore, his delineation of the limits of the authority of the civil magistrate, presented a challenge to the state's authority and led him to formulate a radical version of the Covenanter doctrine of resistance to the state. While Gillespie supported uniformity of religion between England and Scotland, opposed religious toleration, and rejected the Engagement with King Charles, none of these causes proved successful in his lifetime. Yet these ideas influenced generations of Resolutioners, Protestors, Cameronians, and other heirs of the Scottish Covenanter tradition.

Throughout the seventeenth century, numerous Scots became convinced that the major political and religious upheavals of their age signified the fulfillment of, or further unfolding of, the vivid prophecies described in the Book of Revelation which foretell of the final consummation of all things. To date, however, an in-depth analysis of the evolution of Scottish apocalyptic belief during the seventeenth century has never been undertaken. This thesis utilizes a wide variety of source material to demonstrate the existence of a cohesive, persistent, and largely conservative tradition of apocalyptic thought in Scotland that spanned the years 1588 to 1688. Chapter One examines several influential commentaries on the Book of Revelation published by notable Scots during the decades either side of the Union of Crowns. These works reveal many of the principal characteristics that formed the basis of the Scottish apocalyptic tradition. The most important of these traits which became a consistent feature of the tradition was the rejection of millenarianism. In recent years, historians have exaggerated the influence of millenarian ideals in Scotland during the Covenanting movement which began in 1638. Chapter Two argues that Scottish Covenanters consistently denounced millenarianism as a dangerous, subversive doctrine that could lead to the religious radicalism espoused by sixteenth-century German Anabaptists. Chapter Three looks at political and religious factors which led to the general decline of apocalyptic expectancy in Scotland during the Interregnum. It also demonstrates how, despite this decline, Scottish apocalyptic thinkers continued to uphold the primary traits of the apocalyptic tradition which surfaced over the first half of the century. Lastly, Chapter Four explains how state-enforced religious persecution of Scottish Presbyterians during the Restoration period led to the radicalisation of the tradition and inspired the violent actions of Covenanter extremists who believed they had been chosen by God to act as instruments of his divine vengeance in the latter-days.