7 Churches of Revelation: Sardis

Revelation 3:1-6 KJV

And unto the angel of the church in Sardis write; These things
saith he that hath the seven Spirits of God, and the seven stars; I know thy works, that
thou hast a name that thou livest, and art dead. [2] Be watchful, and strengthen the
things which remain, that are ready to die: for I have not found thy works perfect before
God. [3] Remember therefore how thou hast received and heard, and hold fast, and
repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt
not know what hour I will come upon thee. [4] Thou hast a few names even in Sardis
which have not defiled their garments; and they shall walk with me in white: for they are
worthy. [5] He that overcometh, the same shall be clothed in white raiment; and I will
not blot out his name out of the book of life, but I will confess his name before my
Father, and before his angels. [6] He that hath an ear, let him hear what the Spirit
saith unto the churches.