Leviticus 16:16-19

ISV(i) 16 Then he is to make atonement on the sacred place on account of the uncleanness of the Israelis, their transgressions, and all their sins. This is how he is to act in the Tent of Meeting, which will remain with them in the middle of their uncleanness.
17 “No person is to be there when he enters the Tent of Meeting to make atonement in the sacred place, until he comes out and has made atonement on account of himself, his household, and the entire assembly of Israel. 18 When he goes to the altar in the LORD’s presence to make atonement for himself, he is to take some of the blood from the bull and the male goat, place it around the horns of the altar, 19 and sprinkle it with the blood on his forefinger seven times, cleansing and sanctifying it from Israel’s sins.”