IV. The time when these prophecies were delivered. 1. The book is dated, as laws used to be, by the reigns of the kings under whom the prophet prophesied. It was in the days of Uzziah king of Judah, when the affairs of that kingdom went very well, and of Jeroboam the second kind of Israel, when the affairs of that kingdom went pretty well; yet then they must both be told both of the sins they were guilty of and of the judgments that were coming upon them for those sins, that they might not with the present gleam of prosperity flatter themselves either into an opinion of their innocence or a confidence of their perpetual security. 2. It is dated by a particular event to which is prophecy had a reference; it was two years before the earthquake, that earthquake which is mentioned to have been in the days of Uzziah (Zech. xiv. 5), which put the nation into a dreadful fright, for it is there said, They fled before it. But how could they flee from it? Some conjecture that this earthquake was at the time of Isaiah's vision, when the posts of the door were moved, Isa. vi. 4. The tradition of the Jews is that it happened just at the time when Uzziah presumptuously invaded the priest's office and went in to burn incense, 2 Chron. xxvi. 16. Josephus mentions this earthquake, Antiq. 9.225, and says, "By it half of a mountain was removed and carried to a plain four furlongs off; and it spoiled the king's gardens." God by this prophet gave warning of it two years before, that God by it would shake down their houses, ch. iii. 15.