Exodus 29:36-37

36You shall offer a bull every day as a sin offering for atonement. You shall cleanse the altar from sin when you make atonement for it, and you shall anoint it to consecrate it [for God’s sacred purpose].

37For seven days you shall make atonement for the altar [of burnt offering] and consecrate it; then the altar shall be most holy. Whatever touches the altar must be holy (set apart for God’s service).