2 Chronicles 29:24
And the priests killed them, and they made reconciliation with their blood upon the altar, to make an atonement for all Israel: for the king commanded that the burnt offering and the sin offering should be made for all Israel. And the priests killed them, and they made reconciliation with their blood upon the altar, to make an atonement for all Israel: for the king commanded that the burnt offering and the sin offering should be made for all Israel.
The verse describes the first service held after the cleansing of the temple, when temple worship was restored under Hezekiah. In it the king was joined by the rulers of the city together with the priests and Levites. Priests placed sin offerings on the altar for all Israel to seek forgiveness for the sins of the nation.
The ceremony was a crowded gathering inside the ornamented temple with panels and columns, including a dense assembly of robed worshipers raising their arms in praise and supplication, an elderly bearded man kneeling with clasped hands in prayer, music from a stringed instrument and long trumpets, and a robed figure standing with lifted arms leading the gathering. The atonement brought deliverance from the bondage of sin and apostasy. It was followed at once by bowed worship with resounding praise and adoration in the temple courts and joyful singing of the songs of David and of Asaph, while Hezekiah and all the people rejoiced because God had prepared the people and the thing was done suddenly.