Confirmed is the word. As God reveals the folly of false prophets, so He establishes the reliability of true prophets. Their predictions are fulfilled (see on Jer. 28:9).
His servant. In this case, probably the prophet Isaiah (see on ch. 41:8).
Thou shalt be inhabited. A century and more before Jerusalem was captured by Nebuchadnezzar and its people carried into captivity, God foretold its restoration. This is a most remarkable prediction, in striking contrast with the prophecy concerning the city of Babylon, that eventually it would be as completely desolate as Sodom and Gomorrah, and never again be inhabited (see ch. 13:19, 20).