2 King 23:17~
The king asked, “What is that tombstone I see?”
The men of the city said, “It marks the tomb of the man of God who came from Judah and pronounced against the altar of Bethel the very things you have done to it.”
“Leve it alone,” he said. “Don’t let anyone disturb his bones.” So they spared his bones and those of the prophet who had come from Samaria.
Just as he had done at Bethel, Josiah removed and defiled all the shrines at the high places that the kings of Israel had built in the towns of Samaria that had provoked the LORD to anger.
Josiah slaughtered all the priests of those high places on the altars and burned human bones on them. Then he went back to Jerusalem.
The king have this order to all the people : “Celebrate the Passover to the LORD your God, as it is written in this Book of the Covenant.”
Not since the days of the judges who led Israel, nor throughout the days of the kings of Israel and the kings of Judah, had any such Passover been observed.
But in the eighteenth year of King Josiah, this Passover was celebrated to the LORD in Jerusalem.
Furthermore, Josiah got rid of the mediums and spiritists, the household gods, the idols and all the other detestable things seen in Judah and Jerusalem. This he did to fulfill the requirements of the law written in the book that Hilkiah the priest had discovered in the temple of the LORD.