God ordered the following eight garments as Aaron's garb: coat, breeches, mitre, girdle, breastplate, ephod, robe, and golden plate; but his sons needed only the first four garments. All these garments had expiatory virtues, and each expiated a definite sin. The coat atoned for murder, the breeches for unchastity, the mitre for pride, the girdle for theft, the breastplate for partial verdicts, the ephod for idolatry, the bells on the robe for slander, and the golden plate for effrontery.
The breastplate and the ephod were set with precious stones, which were the gifts of the noble to the sanctuary, though, to be exact, they were in reality a gift from God. For precious stones and pearls had rained down with the manna, which the noble among Israel had gathered up and laid away until the Tabernacle was erected, when they offered them as gifts.