The book contains, however, much besides the prophecies of Isaiah in the different periods of his long career. It has already been noted that Isa. 36-39 are found also, with some variations, in 2 Kings 18-20, where they are an integral part of the narrative. That this extract from Kings was copied into the Book of Isaiah is explained by the fact that the prophet is a prominent figure in the story. It does not stand in immediate connection with the prophecies of Isaiah during the campaign of Sennacherib in cc. 28-33, from which it is separated by several oracles of different character and date; and the natural presumption is that this historical appendix was added at the end of a roll, just as Jer. 52, also an extract from Kings (2 Kings xxiv. 18-xxv. 21), is appended at the end of the roll of Jeremiah. In the present Book of Isaiah, cc. 36-39 are followed by another prophetic book of considerable length (Isa. 40-66), which has no title, and in which, from first to last, no prophet's name appears. The theme which is announced in the first verses of this book and runs through a large part of it is the approaching deliverance of the Jews from the Babylonian captivity, their return to their own land, and the restoration of Zion. In Isa. 1-35 certain larger divisions are at once apparent; cc. 1-12, a collection of prophecies, chiefly, as appears from dates and other indications, from the earlier years of Isaiah's ministry; cc. 13 to 23, a collection of oracles mainly against foreign nations; cc. 24-27, previsions of a great judgment, in a peculiarly mysterious tone; cc. 28-33, chiefly from the time of Sennacherib, followed by c. 34, in which God's fury is poured out on Edom, and c. 35, a prophecy of restoration akin to cc. 40 ff. It is thus evident that the present book is made up from several older collections of prophecies gathered by different hands; the peculiar titles in cc. 13-23, for instance, are most probably to be attributed to the editor of an independent book of prophecies against the heathen.