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,” (Rev 1:10 KJV)
John was in the Spirit. He was praying and fell into a spiritual state in which he received the visions of revelation.
“And he became very hungry, and would have eaten: but while they made ready, he fell into a trance,” (Act 10:10 KJV)
The Lord’s day was the first day of the week – Sunday. This is the day Jesus resurrected from the dead. Sunday was the day that Christians gathered to worship God.
Alpha and Omega
“Saying, I am Alpha and Omega, the first and the last:” (Rev 1:11a KJV)
Here Jesus tells us once again that He is Alpha and Omega, the first and the last. John of course knows who Jesus is, but Jesus is re-establishing and re-confirming his authority over the seven Churches.
To the Seven Churches
“and, What thou seest, write in a book, and send it unto the seven churches which are in Asia; unto Ephesus, and unto Smyrna, and unto Pergamos, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.” (Rev 1:11b KJV)
Jesus commissioned John to write this message of Revelation to the seven Churches in Asia Minor. The seven Churches were not just chosen at random. They were chosen because they are examples of the various states of the Church.