Church historian David Hay Fleming defends John Knox against those who were still attacking him early in the twentieth century. Many interesting and important historical episodes are cleared up, and set in the light of sound scholarship.

This book touches on the use of prophecy in the Reformation, the attainments of the Scottish church, worship issues, Scripture, the Book of Discipline, civil and ecclesiastical sanctions, God's law, the sovereignty of God, the mass, corporate guilt, private executions, Roman Catholicism and more.