Perhaps one of the most difficult charges a mature Christian leader may face is the double-barreled barb that he lacks credentials and effectiveness while exercising too much authority. The charge, of course, may in some cases be valid; but if not, it’s notoriously difficult to answer. If a leader replies to the first part of the criticism by listing his credentials and service, his critics may respond by leaning on the second: “Ah, see, didn’t we tell you? He is…