2 Chronicles 35:6

And sanctify yourselves. — Probably by washing the hands before handing the blood of sprinkling to the priests. (See 2 Chronicles 30:16 seq.)

Prepare your brethren. — Prepare (the passover) for your brethren of the laity.

That they may do. — So as to do. The Levites themselves are to obey the prescriptions of the Mosaic Law.