them definitively, as the light of his own understanding may direct him; but he turns to the guide that Christ appointed, that is, the teaching authority of the successors of the Apostles; which guide will lead him through the paths of truth, by explaining in what sense the passages of Scripture on doctrinal points have at all times been understood, expounded, and applied. Such a guide is manifestly necessary, when, on those points—as it too often happens—the meaning of any passage has been made