New American Standard Bible (NASB)
Revelation 3
1 "To the angel of the church in Sardis write: He who has the seven Spirits of God and the seven stars, says this: ’I know your deeds, that you have a name that you are alive, but you are dead.
2 Wake up, and strengthen the things that remain, which were about to die; for I have not found your deeds completed in the sight of My God.
3 So remember what you have received and heard; and keep it, and repent. Therefore if you do not wake up, I will come like a thief, and you will not know at what hour I will come to you.
4 But you have a few people in Sardis who have not soiled their garments; and they will walk with Me in white, for they are worthy.
5 He who overcomes will thus be clothed in white garments; and I will not erase his name from the book of life, and 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.’
7 "And to the angel of the church in Philadelphia write: He who is holy, who is true, who has the key of David, who opens and no one will shut, and who shuts and no one opens, says this:
8 ’I know your deeds. Behold, I have put before you an open door which no one can shut, because you have a little power, and have kept My word, and have not denied My name.
9 Behold, I will cause those of the synagogue of Satan, who say that they are Jews and are not, but lie-I will make them come and bow down at your feet, and make them know that I have loved you.
10 Because you have kept the word of My perseverance, I also will keep you from the hour of testing, that hour which is about to come upon the whole world, to test those who dwell on the earth.
11 I am coming quickly; hold fast what you have, so that no one will take your crown.