“I would ask with respect to divine revelation, what difference is there between the dreams of Mohammed and the Dreams of John?”
First, Revelation is not about John’s dreams. It contains visions received directly from Christ.
Christ commanded John to write these things and send the message to the churches.
Christ Himself repeatedly commands us to listen.
Revelation 2:7
He who has an ear, let him hear what the Spirit says to the churches.
He pronounced a special blessing on those who read, hear, and keep the prophecies of the book of Revelation.
Revelation 1:3
Blessed is he who reads and those who hear the words of this prophecy, and keep those things which are written in it; for the time is near.
Revelation closes the canon of scripture. This is how we know that the Bible has been completed:
Revelation 22:18-19
For I testify to everyone who hears the words of the prophecy of this book: If anyone adds to these things, God will add to him the plagues that are written in this book; and if anyone takes away from the words of the book of this prophecy, God shall take away his part from the Book of Life, from the holy city, and from the things which are written in this book.
Revelation contains instructions, worship, and prophecies of future, end-times events.
And, like all other scriptures, it reveals the person of Christ, which the point of the Bible.
John 5:39
You search the Scriptures, for in them you think you have eternal life; and these are they which testify of Me.
Luke 24:27
And beginning at Moses and all the Prophets, He expounded to them in all the Scriptures the things concerning Himself.
The Revelation is a revealing of Jesus Christ.
To compare this majestic book to the ravings of a madman is contemptible. How could that even enter your mind?
Ravings of a madman, yes. But John’s Revelations were not accepted for 350 years after they were put to paper. That would be like something written in New England in 1670 inally being accepted as truth today. My question to you is this: Given the Syrian Orthodox Church does not accept the Revelations is it truly Christian?