Revelation 1:19
"So, write down the things that you have seen, and the things now going on, and the things that will happen later on.
Revelation 1:11-3
saying, "Write down in a book what you see and send it to the seven churches: Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia and Laodicia" [Note: These seven congregations were all located in western Asia Minor].
Revelation 4:1-11
After [seeing all] these things, I looked, and there in heaven I saw [a vision of] an open door, and the voice I had first heard speaking to me like [the sound of] a trumpet [See 1:10], said, "Come up here [i.e., to heaven], and I will show you the things which must happen after these things [i.e., the things just revealed]."