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2Wake up, and establish the things that remain, which were ready to die, for I have found no works of yours perfected before my God. 3Remember therefore how you have received and heard. Keep it, and repent. If therefore you won`t watch, I will come as a thief, and you won`t know what hour I will come on you. 4Nevertheless you have a few names in Sardis that did not defile their garments. They will walk with me in white, for they are worthy. 5He who overcomes will be arrayed like this in white garments, and I will in no way blot his name out of the book of life, and I will confess his name before my Father, and before his angels. 6He who has an ear, let him hear what the Spirit says to the assemblies.
Revelation 3:1-6 (WEB)