2 Chronicles 29:20-22

20Then King Hezekiah arose early gathered the leaders of the city and went up to the House of Adonai.

21They brought seven bulls, seven rams, seven lambs and seven he-goats as a sin offering for the kingdom, the sanctuary and Judah, and he commanded the kohanim—the sons of Aaron—to offer them on the altar of Adonai.

22So they slaughtered the bulls and the kohanim took the blood and sprinkled it against the altar; next they slaughtered the rams and sprinkled the blood against the altar; then they slaughtered the lambs and sprinkled the blood against the altar.