Exodus 29:4-9

4“And Aaron and his sons you shall bring to the door of the tabernacle of meeting, and you shall wash them with water.

5Then 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.

6You shall put the turban on his head, and put the holy crown on the turban.

7And you shall take the anointing oil, pour it on his head, and anoint him.

8Then you shall bring his sons and put tunics on them.

9And 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.