REVELATION 4:1

AFTER this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will show thee things which must be hereafter.

‘A door opened in heaven’ signifies a revelation in the kingdom of God. The ‘first voice’ which John ‘heard as it were of a trumpet’ was none other than the voice of the Lord Jesus Christ. It was the voice John heard immediately after he had been transported by the Spirit on the Lord’s Day: “I was in the Spirit on the Lord’s Day, and heard behind me a great voice, as of a trumpet, 11 Saying, I am Alpha and Omega, the first and the last….” (Revelation 1:10,11) Jesus invited John to come up to where He was so that He could show John ‘the things which must be hereafter’, even the things which would constitute the third category of things He had previously instructed John to write of: “Write the things which thou hast seen, and the things which are, and the things which shall be hereafter;” (Revelation 1:19)