2 Chronicles 30:16,17

The priests sprinkled the blood Of the sacrifices upon the altar; which they received of the hand of the Levites Who killed and flayed the sacrifices, which the priests, if they had been sanctified, should have done, as was observed on 2 Chronicles 29:34. For there were many in the congregation that were not sanctified Abundance of people that came to keep this passover were not clean according to the law, and therefore many more sacrifices were to be offered for their cleansing than would otherwise have been necessary: which was one reason why the Levites were employed in the work, for the priests were not of a number sufficient to perform this duty. The reader must observe that besides the paschal-lamb, the offering of all the sacrifices, which were appointed to accompany it, are included in keeping the passover.