17 For there were many in the assembly that had not sanctified themselves: therefore the Levites had the charge of the slaughtering of the passover sacrifices for every one that was not clean, to sanctify the same unto the Lord.
2 Chronicles 30:17 Cross References - Leeser
Exodus 12:6
6 And ye shall have it in keeping until the fourteenth day of the same month; and then the whole assembly of the congregation of Israel shall kill it toward evening.
2 Chronicles 29:34
34 Only the priests were too few, so that they could not flay all the burnt-offerings: wherefore their brethren the Levites assisted them, till the work was ended, and until the other priests could sanctify themselves, for the Levites were of upright heart to sanctify themselves more than the priests.
2 Chronicles 35:3-6
3 And he said unto the Levites that instructed all Israel, who were holy unto the Lord, Set the holy ark in the house which Solomon the son of David the king of Israel did build; you have not to carry it any more upon your shoulders; now serve the Lord your God, and his people Israel.
4 And prepare yourselves by your family divisions, according to your courses, after the written order of David the king of Israel, and after the written order of Solomon his son;
5 And stand in the holy place according to the divisions of the family divisions of your brethren the sons of the people, and after the division of the families of the Levites;
6 And slaughter the passover-sacrifice, and sanctify yourselves, and prepare it for your brethren, to do according to the word of the Lord by the hand of Moses.