Leviticus 16:20

17 And no man may be in the Tent of meeting from the time when Aaron goes in to take away sin in the holy place till he comes out, having made himself and his house and all the people of Israel free from sin.

18 And he is to go out to the altar which is before the Lord and make it free from sin; and he is to take some of the blood of the ox and the blood of the goat and put it on the horns of the altar and round it;

19 Shaking drops of the blood from his finger on it seven times to make it holy and clean from whatever is unclean among the children of Israel.

20 And when he has done whatever is necessary to make the holy place and the Tent of meeting and the altar free from sin, let him put the living goat before the Lord;

21 And Aaron, placing his two hands on the head of the living goat, will make a public statement over him of all the evil doings of the children of Israel and all their wrongdoing, in all their sins; and he will put them on the head of the goat and send him away, in the care of a man who will be waiting there, into the waste land.

22 And the goat will take all their sins into a land cut off from men, and he will send the goat away into the waste land.

23 Then let Aaron come into the Tent of meeting and take off the linen clothing which he put on when he went into the holy place, and put them down there;