What is the vocation of the theological teacher? The “Cambridge Platform” written by New England Puritans in 1648 says, “The office of . . . teacher is to attend to doctrine and therein to administer a word of knowledge . . . given by Christ for the perfection of the saints, and edifying of his body.” Comparable descriptions can be found in classic statements from other Christian traditions. If The Scope of Our Art is indicative, we’ve come a long way since then: no such systematic definition is readily available today.