2 Kings 23:18-22

“Leave 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 all the shrines at the high places that the kings of Israel had built in the towns of Samaria and that had aroused the Lord’s 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 gave this order to all the people: “Celebrate the Passover to the Lord your God, as it is written in this Book of the Covenant.”

Neither in the days of the judges who led Israel nor in the days of the kings of Israel and the kings of Judah had any such Passover been observed.