Leviticus 8:7-9

And he put upon him the coat, and girded him with the girdle, and clothed him with the robe, and put the ephod upon him, and he girded him with the curious girdle of the ephod, and bound it unto him therewith.

He put upon him the coat. The investiture took place on the same spot, and near the laver. The splendour of the official vestments, together with the gorgeous tiara of the high priest, was intended doubtless, in the first instance, to produce in the minds of the people a high respect for the ministers of religion; and in the next, from the predominant use of linen, to inculcate upon Aaron and his sons the duty of maintaining unspotted righteousness in their characters and lives.