Leviticus 16:17-18

17 aNo one may be in the tent of meeting from the time he enters to make atonement in the Holy Place until he comes out and has made atonement for himself and for his house and for all the assembly of Israel. 18Then he shall go out to the altar that is bbefore the Lord and cmake atonement for it, and shall take some of the blood of the bull and some of the blood of the goat, and put it on the horns of the altar all around.
Copyright information for ESV