Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come into him, and will sup with him, and he with me. Rev. 3:20
Seven churches are listed in the early parts of this marvelous book. After chapter three the churches are not mentioned as being on the earth. They are portrayed as being in heaven with Lord Jesus. Don't bother with trying to fit her in. From then on you are reading about the Jews and Gentiles. We are promised--wonderful promise--that we shall be saved from a terrible time that is coming. The promise is in Rev. 3:10.
Because thou hast kept the word of my patience, I also will keep thee from the hour of temptation, which shall come upon all the world, to try them that dwell upon the earth.
Don't hear much about this promise, but it is there. After you read the letters to the seven churches, you read this; an offer to open the door and sup with Jesus! But this offer is to any man, not to the churches. Don't want to be too tricky, but Jesus is making each person in the churches a wonderful invitation. Is your church an apostate one? Are they heading that way? Many feel they are. If you object or question, you are often not answered.
If you are ignored, or shunned, the invitation remains there. Hear Him, and open the door when he knocks.