Exodus

Seven days thou shalt make an atonement for the altar, and sanctify it; and it shall be an altar most holy: whatsoever toucheth the altar shall be holy.

All the males among the children of Aaron shall eat of it. It shall be a statute for ever in your generations concerning the offerings of the Lord made by fire: every one that toucheth them shall be holy.

And thou shalt offer every day a bullock for a sin offering for atonement: and thou shalt cleanse the altar, when thou hast made an atonement for it, and thou shalt anoint it, to sanctify it.