David their king; viz. the "righteous Branch" or "Plant" of Jeremiah 23:5.
Therefore fear thou not, O my servant Jacob, etc. These two verses, omitted in the Septuagint, are among the passages which Hitzig (carrying out an idea of Movers) attributes to the editorial hand of the author (a pious Jew of the Captivity, according to him) of Isaiah 40-66; and it cannot be denied that the tone and phraseolegy of Isaiah 66:10 is more akin to that of Isaiah 40:1-31:66, than to those of the greater part of Jeremiah. Graf, in controverting Hitzig's view, points out, however, that the expressions referred to by Hitzig as "Deutero-Isaianic," are also found in other books besides the latter part of Isaiah, and that, on the other hand, "the expressions of verse 11 are all as foreign to Isaiah 40-66, as they are current in Jeremiah." As for the expression, "my servant Jacob." (which. only occurs again in Jeremiah in the duplicate of this passage, Jeremiah 46:27, Jeremiah 46:28, and which is specially characteristic of the second part of Isaiah), it is worth noticing that it is found once in the Book of Ezekiel (Ezekiel 37:25), which, on Hitzig's theory, was written before the so called Second Isaiah. It still remains for the student to consider whether these two verses are not an insertion by some later hand (without attempting to discover whose that hand was). That the prophetic writings have received additions from editors and scribes is a fact which cannot reasonably be gainsaid, supported as it is by the phenomena of the historical books. It would be very natural for a pious Jew in the Captivity, not wholly devoid himself of the spirit of prophecy, to encourage his people, in the Name of the Lord, with this glowing word of promise.