3. Remember, then, what you were taught and what you heard; obey it and turn from your sins. If you do not wake up, I will come upon you like a thief, and you will not even know the time when I will come.
4. But a few of you there in Sardis have kept your clothes clean. You will walk with me, clothed in white, because you are worthy to do so.
5. Those who win the victory will be clothed like this in white, and I will not remove their names from the book of the living. In the presence of my Father and of his angels I will declare openly that they belong to me.
6. “If you have ears, then, listen to what the Spirit says to the churches!
7. “To the angel of the church in Philadelphia write: “This is the message from the one who is holy and true. He has the key that belonged to David, and when he opens a door, no one can close it, and when he closes it, no one can open it.
8. I know what you do; I know that you have a little power; you have followed my teaching and have been faithful to me. I have opened a door in front of you, which no one can close.