15 Moreover the altar at Bethel, the high place erected by Jerobo'am the son of Nebat, who made Israel to sin, that altar with the high place he pulled down and he broke in pieces its stones, crushing them to dust; also he burned the Ashe'rah. 16 And as Josi'ah turned, he saw the tombs there on the mount; and he sent and took the bones out of the tombs, and burned them upon the altar, and defiled it, according to the word of the Lord which the man of God proclaimed, who had predicted these things. 17 Then he said, "What is yonder monument that I see?" And the men of the city told him, "It is the tomb of the man of God who came from Judah and predicted these things which you have done against the altar at Bethel." 18 And he said, "Let him be; let no man move his bones." So they let his bones alone, with the bones of the prophet who came out of Sama'ria. 19 And all the shrines also of the high places that were in the cities of Sama'ria, which kings of Israel had made, provoking the Lord to anger, Josi'ah removed; he did to them according to all that he had done at Bethel 20 And he slew all the priests of the high places who were there, upon the altars, and burned the bones of men upon them. Then he returned to Jerusalem.
21 And the king commanded all the people, "Keep the passover to the Lord your God, as it is written in this book of the covenant. 22 For no such passover had been kept since the days of the judges who judged Israel, or during all the days of the kings of Israel or of the kings of Judah; 23 but in the eighteenth year of King Josi'ah this passover was kept to the Lord in Jerusalem.
24 Moreover Josi'ah put away the mediums and the wizards and the teraphim and the idols and all the abominations that were seen in the land of Judah and in Jerusalem, that he might establish the words of the law which were written in the book that Hilki'ah the priest found in the house of the Lord.
Matthew Henry's Commentary on 2 Kings 23:15-24
Commentary on 2 Kings 23:15-24
(Read 2 Kings 23:15-24)
Josiah's zeal extended to the cities of Israel within his reach. He carefully preserved the sepulchre of that man of God, who came from Judah to foretell the throwing down of Jeroboam's altar. When they had cleared the country of the old leaven of idolatry, then they applied themselves to the keeping of the feast. There was not holden such a passover in any of the foregoing reigns. The revival of a long-neglected ordinance, filled them with holy joy; and God recompensed their zeal in destroying idolatry with uncommon tokens of his presence and favour. We have reason to think that during the remainder of Josiah's reign, religion flourished.