2 Chronicles 29:15-31

And they gathered their brethren, and sanctified themselves, and went in, according to the commandment of the king by the words of Jehovah, to cleanse the house of Jehovah. And the priests went in unto the inner part of the house of Jehovah, to cleanse it, and brought out all the uncleanness that they found in the temple of Jehovah into the court of the house of Jehovah. And the Levites took it, to carry it out abroad to the brook Kidron. 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 Jehovah; and they sanctified the house of Jehovah in eight days: and on the sixteenth day of the first month they made an end. Then they went in to Hezekiah the king within the palace, and said, We have cleansed all the house of Jehovah, and the altar of burnt-offering, with all the vessels thereof, and the table of showbread, with all the vessels thereof. Moreover all the vessels, which king Ahaz in his reign did cast away when he trespassed, have we prepared and sanctified; and, behold, they are before the altar of Jehovah. Then Hezekiah the king arose early, and gathered the princes of the city, and went up to the house of Jehovah. 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 Jehovah. So they killed the bullocks, and the priests received the blood, and sprinkled it on the altar: and they killed the rams, and sprinkled the blood upon the altar: they killed also the lambs, and sprinkled the blood upon the altar. And they brought near the he-goats for the sin-offering before the king and the assembly; and they laid their hands upon them: and the priests killed them, and they made a sin-offering with their blood upon the altar, to make atonement for all Israel; for the king commanded that the burnt-offering and the sin-offering should be made for all Israel. And he set the Levites in the house of Jehovah with cymbals, with psalteries, and with harps, according to the commandment of David, and of Gad the king’s seer, and Nathan the prophet; for the commandment was of Jehovah by his prophets. And the Levites stood with the instruments of David, and the priests with the trumpets. And Hezekiah commanded to offer the burnt-offering upon the altar. And when the burnt-offering began, the song of Jehovah began also, and the trumpets, together with the instruments of David king of Israel. And all the assembly worshipped, and the singers sang, and the trumpeters sounded; all this continued until the burnt-offering was finished. And when they had made an end of offering, the king and all that were present with him bowed themselves and worshipped. Moreover Hezekiah the king and the princes commanded the Levites to sing praises unto Jehovah with the words of David, and of Asaph the seer. And they sang praises with gladness, and they bowed their heads and worshipped. Then Hezekiah answered and said, Now ye have consecrated yourselves unto Jehovah; come near and bring sacrifices and thank-offerings into the house of Jehovah. And the assembly brought in sacrifices and thank-offerings; and as many as were of a willing heart brought burnt-offerings.