Revelation 3:3-5

3So remember what you have received and heard—keep it, and repent. If you will not wake up, I will come like a thief, and you will not know at what hour I will come upon you.

4“But still, you have a few people in Sardis who have not stained their clothes. They will walk with Me in white, because they are worthy.

5The one who overcomes thus will be dressed in white clothes; I will never blot his name out of the Book of Life, and will confess his name before My Father and His angels.