The best MSS. commence this verse with “But,” or “Nevertheless.” The case of the Sardian Church was bad, yet the loving eyes of the faithful witness would not ignore the good. There were a few who had not defiled their garments. These had not succumbed to the oppressive moral atmosphere around them. The words cannot, of course, be understood of absolute purity. Their praise is that, in the deathlike, self-complacent lethargy around, they had kept earnest in the pursuit of holiness, and had not forgotten Him who could cleanse and revive. (Comp. Revelation 7:14.)
They shall walk with me in white. — This “white” is not the white of the undefiled robe; it is the lustrous white of glory, as in the promise in the following verse. (Comp. also Revelation 2:17.)