2 Chronicles 29:19 (KJV)

Now they began on the first day of the first month to sanctify, and on the eighth day of the month came they to the porch of the Lord: so they sanctified the house of the Lord in eight days; and in the sixteenth day of the first month they made an end.

Then they went in to Hezekiah the king, and said, We have cleansed all the house of the Lord, and the altar of burnt offering, with all the vessels thereof, and the shewbread table, with all the vessels thereof.

Moreover all the vessels, which king Ahaz in his reign did cast away in his transgression, have we prepared and sanctified, and, behold, they are before the altar of the Lord.

Then Hezekiah the king rose early, and gathered the rulers of the city, and went up to the house of the Lord.

And they brought seven bullocks, and seven rams, and seven lambs, and seven he goats, for a sin offering for the kingdom, and for the sanctuary, and for Judah. And he commanded the priests the sons of Aaron to offer them on the altar of the Lord.