When I was a Pastor in WCG, I asked a Presbyterian Minister what he thought about the Book of Revelation. He calmly said, "The man had good drugs."
Practically everyone on the planet knows something about the Book of Revelation. It's blood dripped, vials, trumpets, demons, death and destruction filled pages are a part and parcel of much of our culture. Every dis-aster ("bad star") in our world that is of "Biblical proportions" can end up as the final Armageddon event.
"Har-Megiddo" or "valley of Megiddo" is where all the nations of the earth will gather to fight the final battle before Jesus returns. I worked for a month at "Har-Megiddo" digging through it's history with a shovel and I can tell you, there is no room for all the nations of the earth to meet in that valley. While beautiful and the gateway between Europe and Asia to Africa, the phrase spoken to me by an Israeli when he showed me the real Mt. Zion , "We Israelis exaggerate," comes to mind. A few miles to the north in the Caves of Carmel, evidently Neanderthals liked the place as well, 200,000 years ago and 30 feet below Elijah's keister while cowering in the same caves afraid of Jezebel's wrath for his killing off her 450 prophets. Men don't fear other angry religious men, but they do fear an angry pagan woman.
The Churches of God would not survive or have much of a message were it not for the Book of Revelation and its Grandfather, the Book of Daniel. Revelation is the grease that promotes the fear needed to grow their kind of religious organization. Nothing generates income faster than "Soon" and "3-5, no more than 10 15 tops." It is being used today, perhaps, even as a script, by some powers that be to wage war and achieve devious ends by any means possible it seems at times. Humans and sociopaths play such games in high places. They know the memes that motivate.
The author of Revelation fed off Daniel for inspiration using many of the same characters and for many of the same reasons. Revelation is full of astrology and astro-theology and the Greek writer was brilliant or demented depending on one's point of view. Demented types can be brilliant I suppose. If you wish to find a woman clothed with the sun, the moon at her feet and 12 stars in her crown, you can find it on Stellarium in the summer of 69 AD by just looking up. I spare you. The astrotheological nature of the Bible and many of it's stories and characters drives some readers to livid distraction.
Daniel was written, not in the 500's BCE but in the 160s BCE to encourage the Jews during the Maccabean Revolt to hang in there until God took the Romans out. In the same way, Revelation was written to encourage Jewish Christians stuck in the same disaster 200 years later with the same Romans running Jerusalem
Ellaine Pagels, one the world's leading biblical scholars, has written an excellent book on "Revelations: Visions, Prophecy and Politics in the Book of Revelation."