Zephaniah 1:1 - Clarke's commentary and critical notes on the Bible

The word of the LORD which came unto Zephaniah the son of Cushi, the son of Gedaliah, the son of Amariah, the son of Hizkiah, in the days of Josiah the son of Amon, king of Judah. The word of the Lord which came unto Zephaniah - Though this prophet has given us so large a list of his ancestors, yet little concerning him is known, because we know nothing certain relative to the persons of the family whose names are here introduced. We have one chronological note which is of more value for the correct understanding of his prophecy than the other could have been, how circumstantially soever it had been delivered; viz., that he prophesied in the days of Josiah, son of Amon, king of Judah; and from the description which he gives of the disorders which prevailed in Judea in his time, it is evident that he must have prophesied before the reformation made by Josiah, which was in the eighteenth year of his reign. And as he predicts the destruction of Nineveh, Zechariah 2:13, which, as Calmet remarks, could not have taken place before the sixteenth of Josiah, allowing with Berosus twenty-one years for the reign of Nabopolassar over the Chaldeans; we must, therefore, place this prophecy about the beginning of the reign of Josiah, or from b.c. 640 to b.c. 609. But see the chronological notes.