The Altar of Burnt-Offering: Cleansed and Purified with Blood
Source: TTT
Exodus 29:36, 37
Sacrifice a bull as a sin offering each day for atonement. Purify the altar by making atonement for it, and anoint it to consecrate it. / For seven days you shall make atonement for the altar and consecrate it. Then the altar will become most holy; whatever touches the altar will be holy.