Appendix 11—On the Prophecy, Isaiah 40:3 (See Book II. ch. 11.)

According to the Synoptic Gospels, the public appearance and preaching of John was the fulfilment of the prediction with which the second part of the prophecies of Isaiah opens, called by the Rabbis, the book of consolations. After a brief general preface (Isaiah 40:1, 2), the words occur which are quoted by St. Matthew and St. Mark (Isaiah 40:3), and more fully by St. Luke (Isaiah 40:3-5). A more appropriate beginning of the book of consolations could scarcely be conceived.LTJMBA 135.1

The quotation of Isaiah 40:3 is made according to the LXX., the only difference being the change of paths of our God into His paths. The divergences between the LXX. and our Hebrew text of Isaiah 40:4, 5 are somewhat more numerous, but equally unimportant—the main difference from the Hebrew original lying in this, that, instead of rendering all flesh shall see it together we have in the LXX. and the New Testament, all flesh shall see the salvation of God. As it can scarcely be supposed that the LXX. read w(#y for wdxy, we must regard their rendering as Targumic. Lastly, although according to the accents in the Hebrew Bible we should read, The Voice of one crying: In the wilderness prepare &c., yet, as alike the LXX., the Targum, and the synoptists render, The Voice of one crying in the wilderness: Prepare their testimony must be regarded as outweighing the authority of the accents, which are of so much later date.LTJMBA 135.2

But the main question is, whether Isaiah 40:3, &c., refers to Messianic times or not. Most modern interpreters regard it as applying to the return of the exiles from Babylon. This is not the place to enter on a critical discussion of the passage; but it may be remarked that the insertion of the word salvation in v. 5 by the LXX. seems to imply that they had viewed it as Messianic. It is, at any rate, certain that the Synopists so understood the rendering of the LXX. But this is not all. The quotation from Isaiah 40. was regarded by the Evangelists as fulfilled, when John the Baptist announced the coming Kingdom of God. We have proof positive that, on the supposition of the correctness of the announcement made by John, they only took the view of their contemporaries in applying Isaiah 60:3, &c., to the preaching of the Baptist. The evidence here seems to be indisputable, for the Targum renders the close of v. 9 (say unto the cities of Judah, Behold your God!) by the words: Say to the cities of the House of Judah, the Kingdom of your God shall be manifested.LTJMBA 135.3

In fact, according to the Targum, the good tidings are not brought by Zion nor by Jerusalem, but to Zion and to Jerusalem.LTJMBA 136.1