Revelation 3:5 in the King James Version
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.
Context
4 Nevertheless you have a few names in Sardis that didn’t defile their garments. They will walk with me in white, for they are worthy.
5 He who overcomes will be arrayed 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.
6 He who has an ear, let him hear what the Spirit says to the assemblies.