2 Chronicles 30:15-19

Leeser(i) 15 And they slaughtered the passover-sacrifice on the fourteenth day of the second month: and the priests and the Levites were ashamed, and sanctified themselves, and brought burnt-offerings unto the house of the Lord. 16 And they stood on their station after their prescribed manner, according to the law of Moses the man of God, the priest sprinkling the blood, which they received out of the hand of the Levites. 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. 18 For a large portion of the people, even many out of Ephraim, and Menasseh, Issachar, and Zebulun, had not cleansed themselves, but ate the passover not as it is written. However Hezekiah prayed for them, saying, The Lord who is good will grant pardon for this. 19 To every one that hath directed his heart to seek God, the Lord the God of his fathers; though he be not cleansed according to the purification of the sanctuary.