If we would bear unprejudiced witness to the Divine origin of Scripture, we must prove solely on its own authority that it teaches true moral doctrines, for by such means alone can its Divine origin be demonstrated: we have shown that the certitude of the prophets depended chiefly on their having minds turned towards what is just and good, therefore we ought to have proof of their possessing this quality before we repose faith in them. From miracles God's divinity cannot be proved [as I shall show], for miracles could be wrought by false prophets. Wherefore the Divine origin of Scripture must consist solely in its teaching true virtue. But we must come to our conclusion simply on Scriptural grounds, for if we were unable to do so we could not, unless strongly prejudiced, accept the Bible and bear witness to its Divine origin. Our knowledge of Scripture must then be looked for in Scripture only. Lastly, Scripture does not give us definitions of things any more than nature does: therefore, such definitions must be sought in the latter case from the diverse workings of nature; in the former case, from the various narratives about the given subject which occur in the Bible. The universal rule, then, in interpreting Scripture is to accept nothing as an authoritative Scriptural statement which we do not perceive very clearly when we examine it in the light of its history. What I mean by its history, and what should be the chief points elucidated, I will now explain. The history of a Scriptural statement comprises-- I. The nature and properties of the language in which the books of the Bible were written, and in which their authors were accustomed to speak. We shall thus be able to investigate every expression by comparison with common conversational usages. Now all the writers both of the Old Testament and the New were Hebrews: therefore, a knowledge of the Hebrew language is before all things necessary, not only for the comprehension of the Old Testament, which was written in that tongue, but also of the New: for although the latter was published in other languages, yet its characteristics are Hebrew. II. An analysis of each book and arrangement of its contents under heads; so that we may have at hand the various texts which treat of a given subject. Lastly, a note of all the passages which are ambiguous or obscure, or which seem mutually contradictory.