That confirmeth the word of his servant, and performeth the counsel of his messengers; that saith to Jerusalem, Thou shalt be inhabited; and to the cities of Judah, Ye shall be built, and I will raise up the decayed places thereof:
That confirmeth the word of his servant - in a collective sense, because the prophets in general, who foretold the return from Babylon; answering to 'His messengers' (plural, in the parallel clause) (Maurer). Antitypically and ultimately Messiah, who is the consummating embodiment of all the prophets and messengers of God (Malachi 3:1; Matthew 21:34; Matthew 21:36-37; John 10:36), hence, the singular, 'His servant.'
And performeth the counsel of his messengers. "The counsel;" the predictions; prophets' counsels concern the future (cf. "counselor," Isaiah 41:28).
That saith to Jerusalem, Thou shalt be inhabited - regarded prophetically as lying in ruins.