The meaning of this verse is likely: “So divide yourselves that for every distinct family among the people who come to the Passover, there shall be…

The king’s charge to the Levites.

And stand in the holy place
The court of the priests, where their ministrations were:

according t…

The destruction Josiah made of idolatry was related in more detail in the book of Kings. His solemnizing the Passover is related here.