2 Chronicles 30:15; 2 Chronicles 30:17

15 They slaughtered the Passover lamb on the fourteenth day of the second month. The priests and the Levites were ashamed and consecrated themselves and brought burnt offerings to the temple of the LORD.

17 Since many in the crowd had not consecrated themselves, the Levites had to kill the Passover lambs for all those who were not ceremonially clean and could not consecrate their lambs to the LORD.