“Do for Aaron and his sons everything I have commanded you, taking seven days to ordain them.
Sacrifice a bull each day as a sin offering to make atonement. Purify the altar by making atonement for it, and anoint it to consecrate it.
References for Exodus 29:36
For seven days make atonement for the altar and consecrate it. Then the altar will be most holy, and whatever touches it will be holy.
References for Exodus 29:37