The meaning is, that just as precious stones are cut, and seals engraved upon them, so these two stones were to be engraved according to the name of the sons of Israel, i.e., so that the engraving should answer to their names, or their names be cut into the stones. “Surrounded by gold-twist shalt thou make it.” זהב משׁבּצות, from שׁבץ to twist, is used in Exo 28:39 (cf. Psa 45:14) for a texture woven in checks; and here it denotes not merely a simple gold-setting, but, according to Exo 28:13, gold-twists or ornaments representing plaits, which surrounded the golden setting in which the stones were fixed, and not only served to fasten the stones upon the woven fabric, but formed at the same time clasps or brooches, by which the two parts of the ephod were fastened together. Thus Josephus says (Ant. iii. 7, 5) there were two sardonyxes upon the shoulders, to be used for clasps.
Verse 12
The precious stones were to be upon the shoulder-pieces of the ephod, stones of memorial for the sons of Israel; and Aaron was to bear their names before Jehovah upon his two shoulders for a memorial, i.e., that Jehovah might remember the sons of Israel when Aaron appeared before Him clothed with the ephod (cf. Exo 28:29). As a shoulder-dress, the ephod was par excellence the official dress of the high priest. The burden of the office rested upon the shoulder, and the insignia of the office were also worn upon it (Isa 22:22). The duty of the high priest was to enter into the presence of God and made atonement for the people as their mediator. To show that as mediator he brought the nation to God, the names of the twelve tribes were engraved upon precious stones on the shoulders of the ephod. The precious stones, with their richness and brilliancy, formed the most suitable earthly substratum to represent the glory into which Israel was to be transformed as the possession of Jehovah (Exo 19:5); whilst the colours and material of the ephod, answering to the colours and texture of the hangings of the sanctuary, indicated the service performed in the sanctuary by the person clothed with the ephod, and the gold with which the coloured fabric was worked, the glory of that service.
verses 13-14
There were also to be made for the ephod two (see Exo 28:25) golden plaits, golden borders (probably small plaits in the form of rosettes), and two small chains of pure gold: “close shalt thou make them, corded” (lit., work of cords or strings), i.e., not formed of links, but of gold thread
