The subject of this paper could include an enormous variety of aspects. The one that probably comes to mind first is the mutual responsibility of a master and his disciples to one another. For example, what kind of promise is implied in Jesus's assurance to those he calls that he will make of them fishers of men? Or what degree of obedience or of support do those who accept the call owe him? On this phase of the subject, however, a good deal has been written, though perhaps not much that is truly satisfactory. I shall go into a question which seems to have been totally neglected: namely, what is the responsibility of a master and his disciples in the outside world for one another's conduct? More precisely, how far is Jesus held accountable by the outside world for the conduct of his followers, and how far are the latter held accountable for his conduct?