2 Chronicles 29:20-24

Then King Hezekiah arose early and assembled the officials of the city, and went up to the house of the LORD. They brought seven bulls, seven rams, seven lambs, and seven male goats for a sin offering for the kingdom, the sanctuary, and Judah. He commanded the priests, the sons of Aaron, to offer them on the altar of the LORD. So they slaughtered the bulls, and the priests took the blood and sprinkled it on the altar. They also slaughtered the rams and sprinkled the blood on the altar; then they slaughtered the lambs and sprinkled the blood on the altar. Then they brought the male goats for the sin offering before the king and the assembly, and they laid their hands on them [to symbolize the transference of their sin]. The priests slaughtered them and cleansed the altar from sin with their blood to atone for all Israel, because the king commanded that the burnt offering and the sin offering be made for all Israel.