How a religious dispute over prayer books triggered the collapse of a British king
In 1639, Charles I attempted to impose religious reforms on Scotland, sparking a rebellion that spiraled into two wars. These conflicts, known as the Bishops' Wars, forced the King to recall Parliament, ultimately destabilizing his rule and setting the stage for the English Civil War and his own eventual execution.
The conflict began in 1637 when Charles I introduced a new Book of Common Prayer to the Church of Scotland. While ostensibly a religious matter, the dispute was fundamentally about political authority. The Scots, who favored a Presbyterian structure governed by ministers and elders, viewed the King’s attempt to impose Episcopalian bishops as an encroachment on their autonomy. In 1638, they signed the National Covenant, pledging to resist these liturgical innovations. By December, the General Assembly of the Church of Scotland had expelled the bishops, prompting Charles to prepare for war.
Charles’s military strategy was ambitious but poorly executed. He planned a three-pronged invasion of Scotland, but the campaign quickly faltered. The First Bishops' War in 1639 ended in a stalemate with the Treaty of Berwick, as neither side was eager to fight. However, the peace was merely a temporary truce. When Charles attempted to reverse the Assembly's decisions, the Scots mobilized again. In 1640, they invaded northern England, securing a decisive victory at the Battle of Newburn. This forced Charles to accept an interim treaty, which required him to pay the Scottish army's expenses—a financial burden that compelled him to recall the English Parliament.
The political fallout was immense. The Long Parliament, which assembled in November 1640, used its leverage to assert power, eventually executing the King's advisor, Thomas Wentworth, 1st Earl of Strafford. Although the Treaty of London in 1641 ended the Bishops' Wars, the underlying tensions between Charles and Parliament remained unresolved. The struggle for control over the military, exacerbated by the 1641 Irish Rebellion, became the proximate cause of the First English Civil War in 1642. The Covenanters' victory in the Bishops' Wars had emboldened them, but their subsequent attempts to impose Presbyterianism on England alienated potential allies, including Oliver Cromwell, leading to further conflict and Scotland's eventual incorporation into the Commonwealth.
Historians note that these wars were not merely religious; they were a struggle for supremacy. Even the famous riot in St. Giles Cathedral, allegedly sparked by Jenny Geddes throwing a stool, is now viewed by scholars like Mark Kishlansky as a coordinated political act rather than a spontaneous outburst. The wars fundamentally altered the balance of power, proving that Charles could no longer rule without the consent of Parliament.
Source: Bishops' Wars
