Leviticus 16:18-19
Context16:18 “Then 1 he is to go out to the altar which is before the Lord and make atonement for it. He is to take 2 some of the blood of the bull and some of the blood of the goat, and put it all around on the horns of the altar. 16:19 Then he is to sprinkle on it some of the blood with his finger seven times, and cleanse and consecrate it 3 from the impurities of the Israelites.