Revelation 3:4-6

4Yet you have a few people in Sardis who have not soiled their clothes. They will walk with me, dressed in white, for they are worthy. 5The one who is victorious will, like them, be dressed in white. I will never blot out the name of that person from the book of life, but will acknowledge that name before my Father and his angels.

6Whoever has ears, let them hear what the Spirit says to the churches.