1“And to the angel of the assembly in Sardis write:
“He who has the seven Spirits of God and the seven stars says these things:
“I know your works, that you have a reputation of being alive, but you are dead. 2Wake up and strengthen the things that remain, which you were about to throw away, for I have found no works of yours perfected before my God. 3Remember therefore how you have received and heard. Keep it and repent. If therefore you won’t watch, I will come as a thief, and you won’t know what hour I will come upon you. 4Nevertheless you have a few names in Sardis that didn’t defile their garments. They will walk with me in white, for they are worthy. 5He who overcomes will be arrayed in white garments, and I will in no way blot his name out of the book of life, and I will confess his name before my Father, and before his angels. 6He who has an ear, let him hear what the Spirit says to the assemblies.
7“To the angel of the assembly in Philadelphia write:
“He who is holy, he who is true, he who has the key of David, he who opens and no one can shut, and who shuts and no one opens, says these things:
8“I know your works (behold, I have set before you an open door, which no one can shut), that you have a little power, and kept my word, and didn’t deny my name. 9Behold, I make some of the synagogue of Satan, of those who say they are Jews, and they are not, but lie—behold, I will make them to come and worship before your feet, and to know that I have loved you. 10Because you kept my command to endure, I also will keep you from the hour of testing which is to come on the whole world, to test those who dwell on the earth. 11I am coming quickly! Hold firmly that which you have, so that no one takes your crown. 12He who overcomes, I will make him a pillar in the temple of my God, and he will go out from there no more. I will write on him the name of my God and the name of the city of my God, the new Jerusalem, which comes down out of heaven from my God, and my own new name. 13He who has an ear, let him hear what the Spirit says to the assemblies.
14“To the angel of the assembly in Laodicea write:
“The Amen, the Faithful and True Witness, the Beginning of God’s creation, says these things:
15“I know your works, that you are neither cold nor hot. I wish you were cold or hot. 16So, because you are lukewarm, and neither hot nor cold, I will vomit you out of my mouth. 17Because you say, ‘I am rich, and have gotten riches, and have need of nothing,’ and don’t know that you are the wretched one, miserable, poor, blind, and naked; 18I counsel you to buy from me gold refined by fire, that you may become rich; and white garments, that you may clothe yourself, and that the shame of your nakedness may not be revealed; and eye salve to anoint your eyes, that you may see. 19As many as I love, I reprove and chasten. Be zealous therefore, and repent. 20Behold, I stand at the door and knock. If anyone hears my voice and opens the door, then I will come in to him and will dine with him, and he with me. 21He who overcomes, I will give to him to sit down with me on my throne, as I also overcame and sat down with my Father on his throne. 22He who has an ear, let him hear what the Spirit says to the assemblies.”
Jesus focuses on “how” they received and heard. His command to “remember” has the sense of keep remembering. They know how it began. To overcome spiritual lethargy, they must remember what they did right and continue it.
Jesus’ use of “if” here implies that they may or may not watch out for Him. How do they watch? They can be prepared for Jesus’ sudden return by getting about those things He has called them to do.
Watching also implies watching out for Jesus, of being prepared for His return. The threat to come as a thief likely alludes to the history of the city, in that it fell twice to conquerors because it was not watching out for them diligently. Jesus is threatening to “sneak up” on them.