The Copy of a Letter Sent to the Lady Mary, Dowager Regent of Scotland

A bold pastoral letter from the Scottish Reformer to Mary of Guise, Regent of Scotland, paired with a companion sermon on the Lord's Supper. Knox challenges Catholic sacramental doctrine — particularly transubstantiation and the Mass as idolatry — setting forth a Reformed understanding of Christ's spiritual presence in the Supper. A rare window into the fierce theological debates of the Scottish Reformation, written with pastoral urgency and polemical clarity.