All the priests and Levites had purified themselves and were ceremonially clean. And the Levites slaughtered the Passover lamb for all the exiles, for their priestly brothers, and for themselves.
KJV
For the priests and the Levites were purified together, all of them [were] pure, and killed the passover for all the children of the captivity, and for their brethren the priests, and for themselves.
ASV
For the priests and the Levites had purified themselves together; all of them were pure: and they killed the passover for all the children of the captivity, and for their brethren the priests, and for themselves.