2 Kings 23:19-23

Josiah destroyed, just as he did at Bethel, all the shrines of the high places in the towns of Samaria that the kings of Israel had built that had angered the Lord.

Josiah slaughtered all the priests who were there at the high places on the altars, and burned human bones on them. Then he returned to Jerusalem.

The king sent out an order to all the people, “Observe the Passover of the Lord your God, as it is written in this Book of the Agreement.”

Such a Passover as this had not been observed from the days of the judges who ruled Israel on through all the days of the kings of Israel and Judah.

But in the eighteenth year of King Josiah, this Passover was observed to honor the Lord in Jerusalem.