Revelation 3:3-5

So remember all the things you’ve received and heard, then turn back to God and obey them. For if you continue to slumber, I will come to you like a thief, and you’ll have no idea at what hour I will come. Yet there are still a few in Sardis who have remained pure, and they will walk in fellowship with me in brilliant light, for they are worthy. And the one who experiences victory will be dressed in white robes and I will never, no never erase your name from the Book of Life. I will acknowledge your name before my Father and his angels.