Scripture has light in itself apart from the Church; that light is evidence of truth; metaphysical versus moral evidence

As for the first point: in this question our writers lay down as a foundation that sacred Scripture has in itself a certain light by which, with all authority of the Church set aside, it can become known through itself. And certainly Scripture in many places compares itself to light. But this noted only in general brings little light to this controversy. Therefore it is necessary to set out more distinctly what that light and evidence of Scripture is. For by that light we understand nothing but a certain evidence of truth which the faithful perceive in Scripture, and by which Scripture proves its own divinity to their minds.

Further, a twofold evidence can be distinguished: one which may be called mathematical or metaphysical; another which can be called moral. I call metaphysical evidence that which belongs to first principles known of themselves, and to conclusions demonstrated through principles of that kind. Moral evidence, however, is that which is seen in things that cannot indeed be demonstrated, yet are urged by such marks and arguments that a prudent and skilled man cannot doubt them or wrest dissent from himself. So it is that the Aeneid was written by Virgil, and the orations against Verres, Catiline, and Antony by Cicero.