Exodus 29:3

“This is the thing that you shall do to them to make them holy, to minister to me in the priest’s office: take one young bull and two rams without defect,

unleavened bread, unleavened cakes mixed with oil, and unleavened wafers anointed with oil. You shall make them of fine wheat flour.

You shall bring Aaron and his sons to the door of the Tent of Meeting, and shall wash them with water.

You shall take the garments, and put on Aaron the tunic, the robe of the ephod, the ephod, and the breastplate, and clothe him with the skillfully woven band of the ephod.

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