Dead - It appears from a comparison of this passage with 2 Chronicles marginal reference) that Josiah was not actually killed in the battle.

Jehoahaz - Or Shallum (the marginal note). He may have taken the name of Jehoahaz ("the Lord possesses") on his accession. He was not the eldest son of Josiah (see 2 Kings 23:36 note). The mention of "anointing" here favors the view that there was some irregularity in the succession (see 1 Kings 1:34 note).

Dead from Megiddo - The word מת meth should here be considered as a participle, dying, for it is certain he was not dead: he was mortally wounded at Megiddo, was carried in a dying state to Jerusalem, and there he died and was buried. See 2 Chronicles 35:24.

Herodotus, lib. i., c. 17, 18, 25, and lib. ii. 159, appears to refer to the same war which is here mentioned. He says that Nechoh, in the sixth year of his reign, went to attack the king of Assyria at Magdolum, gained a complete victory, and took Cadytis. Usher and others believe that Magdolum and Megiddo were the same place. The exact place of the battle seems to have been Hadadrimmon, in the valley of Megiddo, for there Zechariah tells us 2 Kings 12:11, was the great mourning for Josiah. Compare this with 2 Chronicles 35:24, 2 Chronicles 35:25.

And his servants carried him in a chariot dead from Megiddo,.... They took him out of the chariot in which he was wounded, and put him into another, where he died of his wounds by the way; being mortally wounded, he is said to be dead, or a dead man, see 2 Chronicles 35:24.

and brought him to Jerusalem; which, according to Bunting (b), was forty four miles from Megiddo:

and buried him in his own sepulchre; which either he had provided for himself in his lifetime, or which in common belonged to the kings of Judah, see 2 Chronicles 35:24.

and the people of the land took Jehoahaz the son of Josiah, and anointed him, and made him king in his father's stead; though he was not the eldest son, Jehoiakim, who was afterwards placed in his room, being two years older, as appears from 2 Kings 23:31 and this is the reason, as the Jewish commentators in general agree, that he was anointed; which they say was never done to the son of a king, unless there was a competitor, or some objection to, or dispute about, the succession, as in the case of Solomon and others.

(b) Travels, &c. p. 188.

The brief statement, "his servants carried him dead from Megiddo and brought him to Jerusalem," is given with more minuteness in the Chronicles: his servants took him, the severely wounded king, by his own command, from his chariot to his second chariot, and drove him to Jerusalem, and he died and was buried, etc. Where he died the Chronicles do not affirm; the occurrence of ויּמת after the words "they brought him to Jerusalem," does not prove that he did not die till he reached Jerusalem. If we compare Zechariah 12:11, where the prophet draws a parallel between the lamentation at the death of the Messiah and the lamentation of Hadad-Rimmon in the valley of Megiddo, as the deepest lamentation of the people in the olden time, with the account given in 2 Chronicles 35:25 of the lamentation of the whole nation at the death of Josiah, there can hardly be any doubt that Josiah died on the way to Jerusalem at Hadad-Rimmon, the present Rummane, to the south of Lejun (see above), and was taken to Jerusalem dead. - He was followed on the throne by his younger son Jehoahaz, whom the people (הארץ עם, as in 2 Kings 21:24) anointed king, passing over the elder, Eliakim, probably because they regarded him as the more able man.

And his servants carried him in a chariot dead from Megiddo, and brought him to Jerusalem, and buried him in his own sepulchre. And the people of the land took Jehoahaz the son of Josiah, and anointed him, and made him king in his father's stead.

23:30 Dead - Mortally wounded. Jehoahaz - Who was younger than Jehoiakim, yet preferred by the people before the elder brother; either because Jehoiakim refused the kingdom for fear of Pharaoh, whom he knew he should hereby provoke. Or because Jehoahaz was the more stout and warlike prince; whence he is called a lion, Ezek 19:3.

23:25-30 Upon reading these verses, we must say, Lord, though thy righteousness be as the great mountains, evident, plainly to be seen, and past dispute; yet thy judgments are a great deep, unfathomable, and past finding out. The reforming king is cut off in the midst of his usefulness, in mercy to him, that he might not see the evil coming upon his kingdom: but in wrath to his people, for his death was an inlet to their desolations.