See the notes at Exodus 28.

And he put upon him the coat,.... The embroidered coat of fine linen, which was next to his flesh; Exodus 28:39 and all the garments were put on just in the order they are here declared; no mention is made indeed of the linen breeches, since it is highly probable these were put on by Aaron himself in some apartment in the tabernacle, or before came thither; it not being so decent to put on, or have these put on, in the sight of the whole congregation:

and girded him with the girdle; the girdle of needlework with which the linen coat was girt to him, and was distinct from the curious girdle of the ephod after mentioned, Exodus 28:39.

and clothed him with the robe: the robe of the ephod, which had at the hem of it golden bells and pomegranates, Exodus 28:31.

and put the ephod upon him; made of gold, blue, purple, scarlet, and fine twined linen, which had two shoulder pieces, and on them two onyx stones, on which were engraved the names of the twelve tribes, Exodus 28:6.

and he girded him with the curious girdle of the ephod, and bound it unto him therewith; which was made of the same with the ephod, and by which it was girt close unto him; of the mystical meaning of these garments. See Gill on Exodus 28:39, Exodus 28:31, Exodus 28:32, Exodus 28:33, Exodus 28:34, Exodus 28:35, Exodus 28:6, Exodus 28:7, Exodus 28:8, Exodus 28:9, Exodus 28:10, Exodus 28:11, Exodus 28:12.

Then followed the clothing of Aaron. Moses put upon him the body-coat (Exodus 28:39) and girdle (Exodus 28:39 and Exodus 39:22), then clothes him with the mel (Exodus 28:31-35) and ephod (Exodus 28:6-14), and the choshen with the Urim and Thummim (Exodus 28:15-30), and put the cap (Exodus 28:39) upon his head, with the golden diadem over his forehead (Exodus 28:36-38). This investiture, regarded as the putting on of an important official dress, was a symbol of his endowment with the character required for the discharge of the duties of his office, the official costume being the outward sign of installation in the office which he was to fill.

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.

7-9. he put upon him the coat, and girded him with the girdle-The splendor 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.

8:1-13 The consecration of Aaron and his sons had been delayed until the tabernacle had been prepared, and the laws of the sacrifices given. Aaron and his sons were washed with water, to signify that they ought to purify themselves from all sinful dispositions, and ever after to keep themselves pure. Christ washes those from their sins in his own blood whom he makes kings and priests to our God, Re 1:5,6; and those that draw near to God must be washed in pure water, Heb 10:22. The anointing of Aaron was to typify the anointing of Christ with the Spirit, which was not given by measure to him. All believers have received the anointing.