2 Chronicles 35:6; 2 Chronicles 35:12; 2 Chronicles 35:26
Your job is to kill the Passover lambs, then consecrate yourselves and prepare the lambs so that everyone will be able to keep the Passover exactly as God commanded through Moses."
Then they set aside the Whole-Burnt-Offering for presentation to the family groupings of the people so that each group could offer it to God following the instructions in the Book of Moses. They did the same with the cattle.
The rest of the history of Josiah, his exemplary and devout life, conformed to The Revelation of God.