Exodus 29:4-7

4“Present Aaron and his sons at the entrance of the Tabernacle, and wash them with water.

5Dress Aaron in his priestly garments—the tunic, the robe worn with the ephod, the ephod itself, and the chestpiece. Then wrap the decorative sash of the ephod around him.

6Place the turban on his head, and fasten the sacred medallion to the turban.

7Then anoint him by pouring the anointing oil over his head.