Charles Ellicott Commentary Exodus 29:5

"And thou shalt take the garments, and put upon Aaron the coat, and the robe of the ephod, and the ephod, and the breastplate, and gird him with the skilfully woven band of the ephod;" — Exodus 29:5 (ASV)

Thou shalt take the garments — that is, those described in the preceding chapter.

The coat — that is, the linen tunic (Exodus 28:39). As the inner garment, this had to be put on first. Compare Leviticus 8:7-9, where the investiture is more fully described, and is seen to have comprised nine acts:

1. The putting on of the tunic;
2. The girding of the tunic with the under-girdle;
3. The putting on of the robe of the ephod;
4. The putting on of the ephod;
5. Girding with the curious girdle of the ephod;
6. The putting on of the breastplate;
7. The putting of the Urim and Thummim into the bag of the breastplate;
8. The putting on of the mitre; and
9. The attachment of the golden plate to the front of the mitre.

These minute directions may well be regarded as justifying those given in our own Ordinal with respect to the vesting of bishops at the time of their consecration.