“The pastor ought to have two voices: one, for gathering the sheep, and another for warding off and driving away wolves and thieves. The Scripture supplies him with the means of doing both, for he who is deeply skilled in it will be able both to govern those who are teachable, and to refute the enemies of the truth.”
–John Calvin, Commentaries on the Epistles to Timothy, Titus, and Philemon, trans. William Pringle (repr. Grand Rapids: Baker, 1979), 296.