Isaiah 60:15

"Whereas thou hast been forsaken and hated, so that no man passed through thee, I will make thee an eternal excellency, a joy of many generations. Thou shalt suck the milk of the nations, and shall suck the breast of kings; and thou shalt know that I, Jehovah, am thy Saviour, and thy Redeemer, the Mighty One of Jacob. For brass I will bring gold, and for iron I will bring silver, and for wood brass, and for stones iron. I will also make thy officers peace, and thine exactors righteousness. Violence shall no more be heard in thy land, desolation nor destruction within thy borders; but thou shalt call thy walls Salvation, and thy gates Praise."

The glories of the future Israel revealed in these chapters (Isaiah 60-61) should have been infinitely comforting to the captives in Babylon; because they emphasize a number of great principles. (1) God is not unmindful of the welfare of his people, and all of their humiliation and suffering shall be made up to them (if they are faithful) a thousand-fold. (2) Nothing can thwart the eternal purpose of God. Satan indeed may win victories over any given generation, but God is forever winning the Great War against evil. (3) The walls that have been destroyed will be rebuilt. (4) Those who have hated God's people will return, along with their seed, to adore and honor them. (5) God's judgment against the wicked will take place dramatically before the eyes of the whole world.

Note the correspondence of Isaiah 60:17 with Isaiah 9:9,10, and with later verses in that chapter. Also, Isaiah 60:18 is but a restatement in different words of Isaiah 26:1-3. Isaiah is doubtless the author of both passages, and of the whole prophecy.