With Hans Frei's model as an interpretive lens, Drew Collins examines the various ecumenical movements of the twentieth century and their conversations around theological authority in connection to Christianity's relationship with other faith traditions.

The publication of Richard Burridge's What Are the Gospels? in 1992 inaugurated a transformation in Gospel studies by overturning the previous consensus about Gospel uniqueness. Burridge argued convincingly for an understanding of the Gospels as biographies, a ubiquitous genre in the Graeco-Roman world.