Matthew Henry on 2 Chronicles 34:1-7
Concerning Josiah we are here told, 1. That he came to the crown when he was very young, only eight years old (yet his infancy did not debar him from his right), and he reigned thirty-one years (Ch2 34:1), a considerable time. I fear, however, that in the beginning of his reign things went much as they had done in his father's time, because, being a child, he must have left the management of them to others; so that it was not till his twelfth year, which goes far in the number of his years, that the reformation began, Ch2 34:3. He could not, as Hezekiah did, fall about it immediately. 2. That he reigned very well (Ch2 34:2), approved himself to God, trod in the steps of David, and did not de…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 34:5
he burnt the bones of the priests upon their altars--A greater brand of infamy could not have been put on idolatrous priests than the disinterment of their bones, and a greater defilement could not have been done to the altars of idolatry than the burning upon them the bones of those who had there officiated in their lifetime.
Adam Clarke on 2 Chronicles 34:5
He burnt the bones of the priests - כומריא kumeraiya, the kemarim, says the Targum. See this word explained, Kg2 23:5 (note).
John Gill on 2 Chronicles 34:5
And he burnt the bones of the priests upon their altars,.... On which they sacrificed, in detestation of their idolatry, and to deter from it; and this he did according to the prophecy of him, above three hundred and fifty years before:
and cleansed Judah and Jerusalem; from idolatry, and all the monuments of it.
Keil & Delitzsch on 2 Chronicles 34:5
And he burnt the bones of the priests upon their altars, i.e., he caused the bones of the idolatrous priests to be taken from their graves and burnt on the spot where the destroyed altars had stood, that he might defile the place with the ashes of the dead. In these words is summarized what is stated in Kg2 23:13 and Kg2 23:14 as to the defilement of the places of sacrifice built upon the Mount of Olives by the bones of the dead, and in Kg2 23:16-20 as to the burning of the bones of the high priests of Bethel, after they had been taken from their graves, upon their own altars. מזבחותים is an orthographical error for מזבּחותם.