‏ Exodus 28:9-14

Verse 9

Two onyx stones - See Clarke on Exo 25:7 (note).
Verse 11

Like the engravings of a signet - So signets or seals were in use at this time, and engraving on precious stones was then an art, and this art, which was one of the most elegant and ornamental, was carried in ancient times to a very high pitch of perfection, and particularly among the ancient Greeks; such a pitch of perfection as has never been rivaled, and cannot now be even well imitated. And it is very likely that the Greeks themselves borrowed this art from the ancient Hebrews, as we know it flourished in Egypt and Palestine long before it was known in Greece.
Verse 12

Aaron shall bear their names before the Lord - He was to consider that he was the representative of the children of Israel; and the stones on the ephod and the stones on the breastplate were for a memorial to put Aaron in remembrance that he was the priest and mediator of the twelve tribes; and, speaking after the manner of men, God was to be put in mind of the children of Israel, their wants, etc., as frequently as the high priest appeared before him with the breastplate and the ephod. See Exo 28:29.
Verse 13

Ouches of gold - משבצת mishbetsoth, strait places, sockets to insert the stones in, from שבץ shabats, to close, enclose, straiten.

Socket, in this place, would be a more proper translation, as ouch cannot be traced up to any legitimate authority. It appears sometimes to signify a hook, or some mode of attaching things together.
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