Exodus 29:29-37

“Aaron’s sacred garments must be preserved for his descendants who succeed him, and they will wear them when they are anointed and ordained. The descendant who succeeds him as high priest will wear these clothes for seven days as he ministers in the Tabernacle and the Holy Place. “Take the ram used in the ordination ceremony, and boil its meat in a sacred place. Then Aaron and his sons will eat this meat, along with the bread in the basket, at the Tabernacle entrance. They alone may eat the meat and bread used for their purification in the ordination ceremony. No one else may eat them, for these things are set apart and holy. If any of the ordination meat or bread remains until the morning, it must be burned. It may not be eaten, for it is holy. “This is how you will ordain Aaron and his sons to their offices, just as I have commanded you. The ordination ceremony will go on for seven days. Each day you must sacrifice a young bull as a sin offering to purify them, making them right with the LORD. Afterward, cleanse the altar by purifying it; make it holy by anointing it with oil. Purify the altar, and consecrate it every day for seven days. After that, the altar will be absolutely holy, and whatever touches it will become holy.