2 Chronicles 35:6

Then the king commanded all the people saying, “Celebrate the Passover to Yahweh your God as it is written in this book of the covenant.”

and said to them, “You are the heads of the fathers’ households of the Levites; set yourselves apart as holy, both you and your relatives, that you may bring up the ark of Yahweh, the God of Israel, to the place that I have prepared for it.

Then he said to them, “Listen to me, O Levites. Set yourselves apart now as holy, and set apart as holy the house of Yahweh, the God of your fathers, and bring out the impurity from the holy place.

And they slaughtered the Passover animals, and while the priests splashed the blood received from their hand, the Levites skinned them.