Leviticus 16:18 MSG

[18] “Then he will come out to the Altar that is before God and make atonement for it. He will take some of the bull’s blood and some of the goat’s blood and smear it all around the four horns of the Altar. With his finger he will sprinkle some of the blood on it seven times to purify and consecrate it from the uncleannesses of the Israelites.