Exodus 29:36-37
36
And every day shalt thou offer the bullock of sin-offering for atonement: and thou shalt cleanse the altar, when thou makest atonement for it; and thou shalt anoint it, to sanctify it.
37
Seven days thou shalt make atonement for the altar, and sanctify it: and the altar shall be most holy; whatsoever toucheth the altar shall be holy.
Bible text: American Standard Version (1901) · Public domain