A reading of Isaiah makes it clear, however, that the Assyrian period is not the only time in which the book is interested. If anything, Babylon is even more prominent. This means that a major focus of the book is a time well after Isaiah’s own life, since Babylon succeeded Assyria as the leading power in the region only in 605 BC, when its forces overcame those of Egypt at the Battle of Carchemish. When Judah fell and went into Babylonian exile in 587 BC, Isaiah had been dead for about a century.