Revelation 3:1-3

“Write this letter to the angel of the church in Sardis. This is the message from the one who has the sevenfold Spirit of God and the seven stars: “I know all the things you do, and that you have a reputation for being alive—but you are dead. Wake up! Strengthen what little remains, for even what is left is almost dead. I find that your actions do not meet the requirements of my God. Go back to what you heard and believed at first; hold to it firmly. Repent and turn to me again. If you don’t wake up, I will come to you suddenly, as unexpected as a thief.