"John Knox and the Reformation" by Andrew Lang is a historical account of the life and work of John Knox, a Scottish Protestant reformer who played a key role in the Scottish Reformation of the 16th century. The book details Knox's early life as a Catholic priest and his conversion to Protestantism under the influence of the reformer George Wishart. Knox became a fiery preacher and advocate for the reformed faith, and his teachings and writings helped to spread the Protestant message throughout Scotland. The book also describes Knox's involvement in the political and social upheavals of his time, including his support for the Scottish nobility in their struggle against the Catholic Queen Mary, and his eventual role in the establishment of the Presbyterian Church of Scotland. Through his leadership and preaching, Knox inspired a generation of Scots to reject the authority of the Catholic Church and embrace the principles of the Reformation. Despite persecution and opposition from the Catholic establishment, Knox's legacy endured, and his ideas helped shape the religious and political landscape of Scotland for centuries to come. Overall, "John Knox and the Reformation" is a vivid and engaging account of one of the most important figures in Scottish history and his impact on the Protestant movement.