2 Kings 23:21

19All the houses also of the high places that were in the cities of Samaria, which the kings of Israel had made to provoke the LORD to anger, Josiah took away, and did to them according to all the acts that he had done in Bethel.

20He killed all the priests of the high places that were there, on the altars, and burned men’s bones on them; and he returned to Jerusalem.

21The king commanded all the people, saying, “Keep the Passover to the LORD your God, as it is written in this book of the covenant.”

22Surely there was not kept such a Passover from the days of the judges who judged Israel, nor in all the days of the kings of Israel, nor of the kings of Judah;

23but in the eighteenth year of King Josiah, this Passover was kept to the LORD in Jerusalem.