None of the Fathers of the early church is better known or loved than St John Chrysostom, and none of his works is more popular than On the Priesthood. Its stylistic brilliance demonstrates the appropriateness of St John's enduring title, the golden-mouthed. Yet the rhetorical eloquence of the work is not simply camouflage for lack of substance. As Graham Neville observes in his Introduction, Chrysostom had a mind both practical and idealistic,...