'Cleanse' in the Bible

And thou shalt make its pots to cleanse it of the fat, its shovels, and its bowls, and its forks, and its firepans; for all the utensils thereof thou shalt employ copper.

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.