Revelation 3:1-6 (NKJV)
The Dead Church
3 “And to the angel of the church in Sardis write,
‘These things says He who has the seven Spirits of God and the seven stars: “I know your works, that you have a name that you are alive, but you are dead. 2 Be watchful, and strengthen the things which remain, that are ready to die, for I have not found your works perfect before God.[a] 3 Remember therefore how you have received and heard; hold fast and repent. Therefore if you will not watch, I will come upon you as a thief, and you will not know what hour I will come upon you. 4 You[b]have a few names even in Sardis who have not defiled their garments; and they shall walk with Me in white, for they are worthy. 5 He who overcomes shall be clothed in white garments, and I will not blot out his name from the Book of Life; but I will confess his name before My Father and before His angels.
6 “He who has an ear, let him hear what the Spirit says to the churches.”’