2 Kings 23:20-24

He executed the priests of the pagan shrines on their own altars, and he burned human bones on the altars to desecrate them. Finally, he returned to Jerusalem.Josiah Celebrates Passover

King Josiah then issued this order to all the people: “You must celebrate the Passover to the Lord your God, as required in this Book of the Covenant.”

There had not been a Passover celebration like that since the time when the judges ruled in Israel, nor throughout all the years of the kings of Israel and Judah.

But in the eighteenth year of King Josiah’s reign, this Passover was celebrated to the Lord in Jerusalem.

Josiah also got rid of the mediums and psychics, the household gods, the idols, and every other kind of detestable practice, both in Jerusalem and throughout the land of Judah. He did this in obedience to the laws written in the scroll that Hilkiah the priest had found in the Lord’s Temple.