Commentaries:
Jamieson, Fausset, and Brown
Thou, etc.—So "ye are my witnesses" (Isaiah 43:10). Thou canst testify the prediction was uttered long before the fulfilment: "see all this," namely, that the event answers to the prophecy.
declare—make the fact known as a proof that Jehovah alone is God (Isaiah 44:8).
new things—namely, the deliverance from Babylon by Cyrus, new in contradistinction from former predictions that had been fulfilled (Isaiah 42:9; Isaiah 43:19). Antitypically, the prophecy has in view the "new things" of the gospel treasury (Song of Solomon 7:13; Matthew 13:52; II Corinthians 5:17; Revelation 21:5). From this point forward, the prophecies as to Messiah's first and second advents and the restoration of Israel, have a new circumstantial distinctness, such as did not characterize the previous ones, even of Isaiah. Babylon, in this view, answers to the mystical Babylon of Revelation.
hidden—which could not have been guessed by political sagacity (Daniel 2:22, Daniel 2:29; I Corinthians 2:9-10).
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