This collection of essays investigates the practical application of Christian faith and the evolution of ecclesiastical institutions within the social framework of the Middle Ages. Sir Maurice Powicke, a distinguished medievalist and Regius Professor of Modern History at Oxford, utilizes his extensive archival research to examine how religious belief intersected with political authority and daily life. The work argues that the medieval church was not a monolithic entity but a complex, shifting structure deeply embedded in the secular realities of the era.

Historians and scholars of the medieval period frequently cite this work as a foundational text for understanding the nuances of religious life in the pre-modern era. Readers often note the academic density of the prose, which reflects the rigorous historiographical standards of the mid-twentieth century.