TSK · 2 Chronicles 5:11

And the LORD said unto Moses, Go unto the people, and sanctify them to day and to morrow, and let them wash their clothes,

So the priests and the Levites sanctified themselves to bring up the ark of the LORD God of Israel.

And said unto them, Hear me, ye Levites, sanctify now yourselves, and sanctify the house of the LORD God of your fathers, and carry forth the filthiness out of the holy [place].

But the priests were too few, so that they could not flay all the burnt offerings: wherefore their brethren the Levites did help them, till the work was ended, and until the [other] priests had sanctified themselves: for the Levites [were] more upright in heart to sanctify themselves than the priests.

For [there were] many in the congregation that were not sanctified: therefore the Levites had the charge of the killing of the passovers for every one [that was] not clean, to sanctify [them] unto the LORD.

So kill the passover, and sanctify yourselves, and prepare your brethren, that [they] may do according to the word of the LORD by the hand of Moses.