2 Kings 23:20-24

And he slew all the priests of the high places that were there, upon the altars, and burned men’s bones upon them; and he returned to Jerusalem.

And the king commanded all the people, saying, Keep the passover unto Jehovah your God, as it is written in this book of the covenant.

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

but in the eighteenth year of king Josiah was this passover kept to Jehovah in Jerusalem.

Moreover them that had familiar spirits, and the wizards, and the teraphim, and the idols, and all the abominations that were seen in the land of Judah and in Jerusalem, did Josiah put away, that he might confirm the words of the law which were written in the book that Hilkiah the priest found in the house of Jehovah.