Exodus 29:4-9

“And Aaron and his sons you shall bring to the door of the tabernacle of meeting, and you shall wash them with water. Then you shall take the garments, put the tunic on Aaron, and the robe of the ephod, the ephod, and the breastplate, and gird him with the intricately woven band of the ephod. You shall put the turban on his head, and put the holy crown on the turban. And you shall take the anointing oil, pour it on his head, and anoint him. Then you shall bring his sons and put tunics on them. And you shall gird them with sashes, Aaron and his sons, and put the hats on them. The priesthood shall be theirs for a perpetual statute. So you shall consecrate Aaron and his sons.