2 Chronicles 30:16

13 In the second month, a very great assembly gathered in Jerusalem to celebrate the Feast of Unleavened Bread.

14 They proceeded to remove the altars in Jerusalem and to take away the incense altars and throw them into the Kidron Valley.

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

16 They stood at their prescribed posts, according to the Law of Moses the man of God. The priests sprinkled the blood, which they received from the hand of the Levites.

17 Since there were many in the assembly who had not consecrated themselves, the Levites were in charge of slaughtering the Passover lambs for every unclean person to consecrate the lambs to the LORD.

18 A large number of the people—many from Ephraim, Manasseh, Issachar, and Zebulun—had not purified themselves, yet they ate the Passover, contrary to what was written. But Hezekiah interceded for them, saying, “May the LORD, who is good, provide atonement for everyone

19 who sets his heart on seeking God—the LORD, the God of his fathers—even if he is not cleansed according to the purification rules of the sanctuary.”