Do not let it be thought that such a conclusion, as we have been led to, is merely a dogma of modern criticism. Here, if anywhere, the critic is but the patient student of Scripture, searching for the testimony of the sacred text about itself, and formulating that. If it be found that such a testimony conflicts with ecclesiastical tradition, however ancient and universal, so much the worse for tradition. In Protestant circles, at least, we have no choice. _Litera Scripta manet_. When we know that the only evidence for the Isaian authorship of chs. xl.-lxvi. is tradition, supported by an unthinking interpretation of New Testament citations, while the whole testimony of these Scriptures themselves denies them to be Isaiah's, we cannot help making our choice, and accepting the testimony of Scripture. Do we find them any the less wonderful or Divine? Do they comfort less? Do they speak with less power to the conscience? Do they testify with more uncertain voice to our Lord and Saviour? It will be the task of the following pages to show that, interpreted in connection with the history out of which they themselves say that God's Spirit drew them, these twenty-seven chapters become only more prophetic of Christ, and more comforting and instructive to men, than they were before.
But the remarkable fact is, that anciently tradition itself appears to have agreed with the results of modern scholarship. The original place of the Book of Isaiah in the Jewish canon seems to have been after both Jeremiah and Ezekiel,[13] a fact which goes to prove that it did not reach completion till a later date than the works of these two prophets of the Exile.
If now it be asked, Why should a series of prophecies written in the Exile be attached to the authentic works of Isaiah? that is a fair question, and one which the supporters of the exilic authorship have the duty laid upon them of endeavouring to answer. Fortunately they are not under the necessity of falling back, for want of other reasons, on the supposition that this attachment was due to the error of some scribe, or to the custom which ancient writers practised of filling up any part of a volume, that remained blank when one book was finished, with the writing of any other that would fit the place.[14] The first of these reasons is too accidental, the second too artificial, in face of the undoubted sympathy which exists among all parts of the Book of Isaiah. Isaiah himself plainly prophesied of an exile longer than his own generation experienced, and prophesied of a return from it (ch. xi.). We saw no reason to dispute his claims to the predictions about Babylon in chs. xxi. and xxxix. Isaiah's, too, more than any other prophet's, were those great and final hopes of the Old Testament--the survival of Israel and the gathering of the Gentiles to the worship of Jehovah at Jerusalem. But it is for the express purpose of emphasizing the immediate fulfilment of such ancient predictions, that Isa. xl.-lxvi. were published. Although our prophet has _new things to publish_, his first business is to show that the _former things have come to pass_, especially the Exile, the survival of a Remnant, the sending of a Deliverer, the doom of Babylon. What more natural than to attach to his utterances those prophecies, of which the events he pointed to were the vindication and fulfilment? The attachment was the more easy to arrange that the authentic prophecies had not passed from Isaiah's hand in a fixed form. They do not bear those marks of their author's own editing, which are borne by the prophecies both of Jeremiah and Ezekiel. It is impossible to be dogmatic on the point. But these facts--that our chapters are concerned, as no other Scriptures are, with the fulfilment of previous prophecies; that it is the prophecies of Isaiah which are the original and fullest prediction of the events they are busy with; and that the form, in which Isaiah's prophecies are handed down, did not preclude additions of this kind to them--contribute very evident reasons why Isa. xl.-lxvi., though written in the Exile, should be attached to Isa. i.-xxxix.[15]