TSK · 2 Chronicles 5:11

Yahweh said to Moses, "Go to the people, and sanctify them today and tomorrow, and let them wash their garments,

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

and said to them, "Listen to me, you Levites! Now sanctify yourselves, and sanctify the house of Yahweh, the God of your fathers, and carry out the filthiness out of the holy place.

But the priests were too few, so that they could not flay all the burnt offerings: therefore their brothers the Levites helped them, until the work was ended, and until the priests had sanctified themselves; for the Levites were more upright in heart to sanctify themselves than the priests.

For there were many in the assembly who had not sanctified themselves: therefore the Levites were in charge of killing the Passovers for everyone who was not clean, to sanctify them to Yahweh.

Kill the Passover, and sanctify yourselves, and prepare for your brothers, to do according to the word of Yahweh by Moses."