Matthew Henry on 2 Chronicles 35:20–end
It was thirteen years from Josiah's famous passover to his death. During this time, we may hope, thing went well in his kingdom, that he prospered, and religion flourished; yet we are not entertained with the pleasing account of those years, but they are passed over in silence, because the people, for all this, were not turned from the love of their sins nor God from the fierceness of his anger. The next news therefore we hear of Josiah is that he is cut off in the midst of his days and usefulness, before he is full forty years old. We had this sad story, Kg2 23:29, Kg2 23:30. Here it is somewhat more largely related. That appears here, more than did there, which reflects such blame on Josia…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 35:24
took him out of that chariot, and put him in the second chariot--the carriage he had for ordinary use, and which would be more comfortable for the royal sufferer than the war chariot. The death of this good king was the subject of universal and lasting regret.
Adam Clarke on 2 Chronicles 35:24
The second chariot - Perhaps this means no more than that they took Josiah out of his own chariot and put him into another, either for secrecy, or because his own had been disabled. The chariot into which he was put might have been that of the officer or aid-de-camp who attended his master to the war. See the note on Kg2 22:20.
John Gill on 2 Chronicles 35:24
And his servants therefore took him out of that chariot,.... Dead, and had him to Jerusalem, and buried him; See Gill on 2 Kings 23:30,
and all Judah and Jerusalem mourned for Josiah; he having been so good a king, so tender of them, and such an happy instrument in restoring the true religion, and the service of God; this was the sense of the generality of them, who were sincere in their mourning; but it is not improbable that those who were inclined to idolatry were secretly glad, though they dissembled mourning with the rest.