Revelation 3:6

2 Wake up and strengthen what remains, which was about to die; for I have found your deeds incomplete in the sight of My God.

3 Remember, then, what you have received and heard. Keep it and repent. If you do not wake up, I will come like a thief, and you will not know the hour when I will come upon you.

4 But you do have a few people in Sardis who have not soiled their garments, and because they are worthy, they will walk with Me in white.

5 Like them, he who overcomes will be dressed in white. And I will never blot out his name from the Book of Life, but I will confess his name before My Father and His angels.

6 He who has an ear, let him hear what the Spirit says to the churches.

7 To the angel of the church in Philadelphia write: These are the words of the One who is holy and true, who holds the key of David. What He opens no one can shut, and what He shuts no one can open.

8 I know your deeds. See, I have placed before you an open door, which no one can shut. For you have only a little strength, yet you have kept My word and have not denied My name.

9 Look at those who belong to the synagogue of Satan, who claim to be Jews but are liars instead. I will make them come and bow down at your feet, and they will know that I love you.

10 Because you have kept My command to persevere, I will also keep you from the hour of testing that is about to come upon the whole world, to test those who dwell on the earth.

Read all of Revelation 3