Exodus 29:35–37

35 “This is what you are to do for Aaron and his sons based on all I have commanded you. Take seven days to ordain them. 36 Sacrifice a bull as a sin offering each day for atonement. PurifyA the altar when you make atonement for it, and anoint it in order to consecrate it.o 37 For seven days you must make atonement for the altar and consecrate it. The altar will be especially holy. Whatever touches the altar will be consecrated.p