Revelation 3:4

Thou hast a few names— Names are here used for the persons called by them. This symbol therefore seems to allude to the diptychs or matricula used in the primitive church, in which were registered the names of all the faithful; whence St. Luke uses this very phrase, Acts 1:15 and St. John hereafter, ch. Revelation 11:13 and this is according to the Mosaical institution in the book of Numbers, and the constant use of the Israelites afterwards, to keep exact accounts of the genealogies. The phrase, which have not defiled their garments, is a Hebrew symbolical phrase, arising from the pollutions contracted upon the garments, which rendered men defiled under the Mosaic law, and incapable to appear before God in his temple. Here therefore it signifies, that, corrupt and indolent as the general state of the church of Sardis was, these had not polluted themselves with the abominations by which so many had contracted gross defilements. The allegory is continued in the remaining part of the verse, and the reward suited to the communication just given. They shall walk, signifies here, as in ch. Revelation 21:24 shall abide, prosper, flourish, and be every way happy. The reason of this symbol is to be taken from the notion of the word Αγιος, holy; for they who sanctified themselves to perform any acts of religion, clothed themselves in white, which was also the habit of nobles and priests. With me, is fulfilled and explained in ch. Revelation 20:4.—For they are worthy: "As they have been distinguished by their fidelity and zeal, I will distinguish them bymy special favour, and raise them, ere long, to those seats of complete glory, where they shall walk with me in white robes, and be of the number of my joyful and triumphant train; for they are worthy of such distinguished honour, as they have been especially careful to keep themselves from those evils which have been generally prevailing around them." Vitringa and many others are of opinion, that here is an allusion to the custom of the Sanhedrim, when they examined the candidates for the high priesthood. To the man they judged worthy, they gave a white garment; but, if unqualified, he was sent out from among them in mourning.