Hrabanus Maurus's Commentary on Matthew provides a lens through which to view the centrality of biblical studies to Carolingian reform initiatives. The commentary sits amid a burst of interest in Matthew's Gospel in the first quarter of the ninth century. It also occupies a central place in Hrabanus's program for clerical education and renewal. Hrabanus imagined the work as a user-friendly reference guide or introductory text and structured the commentary with highly sophisticated and complementary indexing, organizing, and searching features to privilege ease of use. Hrabanus's design allows for quick appreciation and simple interpretation of the Gospel's overall narrative structure, its principal episodes, and its individual verses. Moreover, Hrabanus took painstaking effort to document the numerous patristic sources upon which he drew in building the commentary, as well as to acknowledge when he contributed thoughts of his own. The manuscript record, epistolary remarks, sermon texts, and literary references — including in the vernacular — testify to broad dissemination and use of the commentary by Hrabanus's network of patrons, peers, and students across Frankish Europe. Attention to the structure, content, and influence of the commentary expands scholarly appreciation of Hrabanus's genius beyond his achievements as an abbot and bishop or as a prolific biblical exegete, to include resourcefulness and practicality in teaching. Moreover, the study illumines the close association Carolingian leaders saw between biblical studies and broader cultural renewal along with the networks connecting leaders across the Frankish world as they reflected upon and promoted reform.