I have, therefore, designed an arrangement which embraces all the prophecies, but treats them in chronological order. I will endeavour to render their contents in terms which appeal to the modern conscience; but, in order to be successful, such an endeavour presupposes the exposition of them in relation to the history which gave them birth. In these volumes, therefore, narrative and historical exposition will take precedence of practical application.
Every one knows that the Book of Isaiah breaks into two parts between chaps. xxxix. and xl. Vol. I. of this Exposition covers chaps. i.-xxxix. Vol. II. will treat of chaps. xl.-lxvi. Again, within chaps. i.-xxxix. another division is apparent. The most of these chapters evidently bear upon events within Isaiah's own career, but some imply historical circumstances that did not arise till long after he had passed away. Of the five books into which I have divided Vol. I., the first four contain the prophecies relating to Isaiah's time (740-701 B.C.), and the fifth the prophecies which refer to later events (chaps. xiii.-xiv. 23; xxiv.-xxvii.; xxxiv.; xxxv.).
The prophecies, whose subjects fall within Isaiah's times, I have taken in chronological order, with one exception. This exception is chap. i., which, although it published near the end of the prophet's life, I treat of first, because, from its position as well as its character, it is evidently intended as a preface to the whole book. The difficulty of grouping the rest of Isaiah's oracles and orations is great. The plan I have adopted is not perfect, but convenient. Isaiah's prophesying was determined chiefly by _four_ Assyrian invasions of Palestine: the first, in 734-732 B.C., by Tiglath-pileser II., while Ahaz was on the throne; the second by Salmanassar and Sargon in 725-720, during which Samaria fell in 721; the third by Sargon, 712-710; the fourth by Sennacherib in 701, which last three occurred while Hezekiah was king of Judah. But outside the Assyrian invasions there were three other cardinal dates in Isaiah's life: 740, his call to be a prophet; 727, the death of Ahaz, his enemy, and the accession of his pupil, Hezekiah; and 705, the death of Sargon, for Sargon's death led to the rebellion of the Syrian States, and it was this rebellion which brought on Sennacherib's invasion. Taking all these dates into consideration, I have placed in Book I. all the prophecies of Isaiah from his call in 740 to the death of Ahaz in 727; they lead up to and illustrate Tiglath-pileser's invasion; they cover what I have ventured to call the prophet's apprenticeship, during which the theatre of his vision was mainly the internal life of his people, but he gained also his first outlook upon the world beyond. Book II. deals with the prophecies from the accession of Hezekiah in 727 to the death of Sargon in 705--a long period, but few prophecies, covering both Salmanassar's and Sargon's campaigns. Book III. is filled with the prophecies from 705 to 702, a numerous group, called forth from Isaiah by the rebellion and political activity in Palestine consequent on Sargon's death and preliminary to Sennacherib's arrival. Book IV. contains the prophecies which refer to Sennacherib's actual invasion of Judah and siege of Jerusalem, in 701.