The Base the Breastplate Was Built to Sit On

The ephod did not stand alone; it was the base to which the priestly breastplate, the hoshen, was fastened by gold chains and rings so the two garments moved as one assembly rather than as separate items loosely worn together. Exodus specifies this attachment in as much mechanical detail as it gives the weaving, describing rings at each corner and cords running between them, which has the effect of describing the ephod and breastplate almost as a single engineered object built in two parts.

The ephod was worn exclusively by the High Priest and only for service in the Tabernacle and later the Temple, not as everyday dress even for priests of lesser rank, marking it as vestment in the strictest sense, reserved to one office and one setting. Its use is described as continuous from the wilderness Tabernacle through the First and Second Temple periods, and Jewish textual tradition holds that the garment, along with the Temple service it belonged to, ceased with the Temple's destruction, so the ephod today is known only through text and through later artistic and scholarly reconstruction rather than through any continuing practice. Artistic reconstructions of the ephod, from medieval manuscript illumination to modern scholarly diagrams, differ from each other more than a casual reader might expect, precisely because the text specifies materials and general arrangement without giving a pattern a tailor could follow exactly.