Seven great marks attest this unity. From Genesis the Bible bears witness to one God. Wherever he speaks or acts he is consistent with himself, and with the total revelation concerning him. The Bible hazards the most unlikely predictions concerning the future, and, when the centuries have brought round the appointed time, records their fulfilment. The Bible is a progressive unfolding of truth.
Nothing is told all at once, and once for all.
And, finally, these writers, some forty-four in number, writing through twenty centuries, have produced a perfect harmony of doctrine in progressive unfolding. This is, to every candid mind, the unanswerable proof of the divine inspiration of the Bible. The Bible is a book of books. Sixty-six books make up the one Book. Considered with reference to the unity of the one book the separate books may be regarded as chapters.