Altar of Incense: Atonement Made For, by the High Priest Once Every Year
Source: TTT
Exodus 30:10
Once a year Aaron shall make atonement on the horns of the altar. Throughout your generations he shall make atonement on it annually with the blood of the sin offering of atonement. The altar is most holy to the LORD.”
Leviticus 16:18, 19
Then he shall go out to the altar that is before the LORD and make atonement for it. He is to take some of the bull’s blood and some of the goat’s blood and put it on all the horns of the altar. / He is to sprinkle some of the blood on it with his finger seven times to cleanse it and consecrate it from the uncleanness of the Israelites.