For Aaron's sons. His actual sons at this time—his descendants afterwards, to whom the priesthood was rigidly confined. Thou shalt make coats. The verb is different from that used in Exodus 28:39, and seems to imply that the priests' tunics were not to be patterned.
Girdles. It has generally been supposed that these were of the same material and workmanship as the high priest's; but this is nowhere stated. In Exodus 39:29, the high priest's girdle alone is spoken of.
Bonnets. Certainly not "bonnets "in the modern sense. Plain, close-fitting caps, shaped like a cup, or rather basin, seem to be meant. Such caps were often worn in Egypt, but not by the priests. For glory and for beauty.
See above, Exodus 39:2. It is very noticeable, that the extremely simple attire of the ordinary priests—a dress of pure white, without anything ornamental about it, unless it were the girdle—is still regarded as sufficient "for glory and for beauty."
White robes have certainly a vast amount of scriptural testimony in their favour.