Bible Verses About Altar of Incense: Atonement made for, by the high priest once every year

Aharon is to make atonement on its horns once a year - with the blood of the sin offering of atonement he is to make atonement for it once a year through all your generations; it is especially holy to ADONAI." 10-20

Then he is to go out to the altar that is before ADONAI 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, thus purifying it and setting it apart from the uncleannesses of the people of Isra'el.