Bible Verses About The Altar of Burnt Offering: Cleansed and purified with blood

And thou shalt offer a calf for sin every day for expiation. And thou shalt cleanse the altar when thou hast offered the victim of expiation, and shalt anoint it to sanctify it.

Seven days shalt thou expiate the altar and sanctify it, and it shall be most holy. Every one, that shall touch it, shall be holy.