On the Church: Historical-Dogmatic Treatises - Volume I - Hermann Dieckmann

On the Church: Historical-Dogmatic Treatises, Volume I by Hermann Dieckmann is a scholastic treatise in ecclesiology that examines the historical and theological foundations of the Church. Beginning with the biblical doctrine of the Kingdom of God, it traces how Christ's preaching and mission prepared for the establishment of a visible and enduring ecclesiastical society.

A central concern of the volume is the divine institution of the Church by Jesus Christ. Dieckmann analyzes the scriptural, historical, and dogmatic evidence for Christ's establishment of a teaching and governing authority, with particular attention to the mission of the Apostles and the origins of the Church's hierarchical structure.

The work also explores the relationship between the Kingdom proclaimed by Christ and the apostolic Church, presenting a systematic defense of the Church's divine constitution. Overall, it provides the historical and theological foundation for understanding the Church as a visible society founded by Christ.