He stationed the Levites in the house of the Lord with cymbals, harps, and lyres, according to the commandment of David and of Gad the king's seer and of the prophet Nathan, for the commandment was from the Lord through his prophets.
The Levites stood with the instruments of David, and the priests with the trumpets.
Then Hezekiah commanded that the burnt offering be offered on the altar. When the burnt offering began, the song to the Lord began also, and the trumpets, accompanied by the instruments of King David of Israel.
The whole assembly worshiped, the singers sang, and the trumpeters sounded; all this continued until the burnt offering was finished.
When the offering was finished, the king and all who were present with him bowed down and worshiped.
King Hezekiah and the officials commanded the Levites to sing praises to the Lord with the words of David and of the seer Asaph. They sang praises with gladness, and they bowed down and worshiped.
Then Hezekiah said, "You have now consecrated yourselves to the Lord; come near, bring sacrifices and thank offerings to the house of the Lord." The assembly brought sacrifices and thank offerings; and all who were of a willing heart brought burnt offerings.
The number of the burnt offerings that the assembly brought was seventy bulls, one hundred rams, and two hundred lambs; all these were for a burnt offering to the Lord.
The consecrated offerings were six hundred bulls and three thousand sheep.
But the priests were too few and could not skin all the burnt offerings, so, until other priests had sanctified themselves, their kindred, the Levites, helped them until the work was finished—for the Levites were more conscientious than the priests in sanctifying themselves.
References for 2 Chronicles 29:34
Besides the great number of burnt offerings there was the fat of the offerings of well-being, and there were the drink offerings for the burnt offerings. Thus the service of the house of the Lord was restored.