6. Besides this, we must closely observe whether it is any proof of holy truths being one book, and the opposite of these many, that for the living there is one book from which they who have become unworthy of it are blotted out, as it is written, "Let them be blotted out of the book of the living," while for those subject to judgment looks are brought; for Daniel says, "The judgment was set and the books were opened." To the unity of the Divine book even Moses testifies when he says, "If thou wilt forgive this people their sin, forgive them; and if not, blot me out of thy book which thou hast written." I take the passage in Isaiah the same way; for it is not a peculiarity of his prophecy that the words of the book were sealed, and were not read by him that was not learned because he was not learned, nor by him that was learned because the book was sealed; but even this is true of all Scripture, which needs the Word that shut and will open; for "He shall shut and none shall open," and once He opens no one can any longer associate darkness with His clear light; and this is why it is said that He shall |41 open and none shut. And the very similar passage in Ezekiel about the book there spoken of, wherein was written "lamentations and music and woe." For every book contains the "woe" of the perishing, and "music" for those who are being saved, and lamentations for those between these extremes. John, too, when he says that he ate one roll of the book, wherein were written things past and things to come, must have regarded the whole of Scripture as one book, very sweet as a man understands it at first and feeds upon it, but bitter when it is revealed to the self-consciousness of every one who has come to know it. To demonstrate this I will add an apostolic saying not understood by the followers of Marcion, who therefore reject the Gospels; for whereas the Apostle says, "According to my gospel in Christ Jesus," and does not speak of gospels, they oppose us, and maintain that if there were several gospels the Apostle would not have used the word in the singular. They do not understand that as He is one, so the Gospel written by its many authors is one in effect, and the Gospel truly delivered by four evangelists is one Gospel.