Jesus spoke in Revelation chapter:
1Write the following to the messenger of the congregation in Sardis, for these are the words of the one who holds the seven Spirits of God and the seven stars:I know all that you do and I know that you have a reputation for being really “alive,” but you’re actually dead!
2Wake up and strengthen all that remains before it dies, for I haven’t found your works to be perfect in the sight of my God. 3So 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.
4Yet 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. 5And 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. 6So the one whose heart is open let him listen carefully to what the Spirit is now saying to all the churches.