Revelation 3:4 – 5
King James Version (KJV)
4 Thou hast a few names even in Sardis which have not defiled their garments; and they shall walk with me in white: for they are worthy.
5 He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.
From BibleGateway.com: http://www.biblegateway.com/passage/?search=Revelation 3:4-5&version=KJV