The history of biblical interpretation has attracted considerable attention in recent decades. This is particularly true in the field of medieval exegesis where much effort has been spent on making primary materials available and advancing their interpretation. One area of research in which even the most basic questions are still under debate is the phenomenon of the biblical Glossa Ordinaria, the standard Bible commentary used by Christian theologians from the twelfth century to the Reformation. Part I of the present collection unites the author's major contributions to Glossa studies - its origin, its false ascription to Walahfrid Strabo, its use among the preachers of the thirteenth and fourteenth century and the Reformers, both Catholic and Protestant, of the sixteenth. A central concern here is the fascinating history of the printed Gloss which began with the Strasbourg edition of 1480/81. Part II concentrates on the image of two central New Testament figures, the Apostles Peter and Paul, in biblical exegesis. The studies illuminate the pivotal role in the history of the church played by certain shifts in the understanding of Petrine texts, and trace conflicting tendencies in the interpretation of Paul down to the Reformation of the sixteenth century. Three of the thirteen essays have not been published before.