White robes
Fifth church - Sardis.
White robes of the righteous ones whose names are in the book of life, Revelation 3:5.
Mostly a dead church, although there was a remnant who had undefiled garments and were still worthy in God's sight. God promises to put the names of those who overcame in the Book of Life.
Sardis was the capital of the ancient kingdom of Lydia on the river Pactolus. Sardis is now called Sest-Kalessi or Sart. The Kingdom of Lydia's other cites included Smyrna, Thyatira and Philadelphia.
Now read Jesus' report card to this group of believers in Sardis.
Background Reading:
Revelation 3:1-6
To the Church in Sardis
3"To the angel of the church in Sardis write:
These are the words of him who holds the seven spirits of God and the seven stars. I know your deeds; you have a reputation of being alive, but you are dead. 2 Wake up! Strengthen what remains and is about to die, for I have not found your deeds complete in the sight of my God. 3 Remember, therefore, what you have received and heard; obey it, and repent. But if you do not wake up, I will come like a thief, and you will not know at what time I will come to you.
4 Yet you have a few people in Sardis who have not soiled their clothes. They will walk with me, dressed in white, for they are worthy. 5 He who overcomes will, like them, be dressed in white. I will never blot out his name from the book of life, but will acknowledge his name before my Father and his angels. 6 He who has an ear, let him hear what the Spirit says to the churches."