The text presents an extensive apologia by Saint John Damascene against those who condemn the use of holy images in the Christian Church. The primary problem addressed is the confusion between pagan idolatry and the proper veneration of sacred art, which arises from a misunderstanding of biblical commands. The author argues that because the invisible God assumed human flesh in the Incarnation, the material world and visible representations of Christ, the Virgin Mary, and the saints have been fundamentally transformed and elevated.
Developing this argument, the author traces the scriptural and traditional foundations of image use, demonstrating how the Old Testament itself incorporated sacred figures and types, such as the cherubim over the ark. The text distinguishes between the supreme worship due to God alone and the relative honor given to holy persons and their memorials. Veneration directed toward an image passes directly to the prototype, functioning much like the honor given to an earthly king's portrait.
Furthermore, the treatise examines the nature of the Communion of Saints, asserting that those who fought against sin and shed their blood for Christ share in His spiritual reign. Rejecting imperial interference in ecclesiastical matters, the author insists that church governance belongs to pastors and doctors rather than secular rulers. The work emphasizes that matter is a good creation of God, made holy through its connection to divine mysteries and sacred history.
The final sections of the volume comprise three sermons dedicated to the Dormition and Assumption of the Mother of God. These discourses extol her singular purity, her unique role as the human mother of the Creator, and her transit from earthly life to heavenly glory. The sermons portray her death as a painless sleep and a triumphant passage into the presence of her Son, where her body remains incorrupt and translated into the heavenly realms.
