I recently started watching The Dust Bowl, a PBS documentary about the drought and subsequent dust storms that drove farmers out of the midwest in the 1930s. The documentary starts with descriptions of the dustbowl by people who lived through it. Here are some things they said:
Let me tell you how it was. I don’t care who describes that to ya, nobody can tell it any worse than what it was. There ain’t no one exaggerates that. There ain’t no way for it to be exaggerated. It was that bad.
It was just unbelievable. It’d blister your face. It would put your eyes out. Well, I, I guess I can’t describe it. It was just, it was just constant, just that steady blow of dirt.
You can try to get out of it, but it follows you, follows you, follows you. You can’t escape it. Looking back on it, it carried with it a feeling of, I don’t know the word exactly, of, of being unreal but almost being um … evil.
As these quotes show, when people see things beyond normal experience, they give up on straightforward description and resort to comparison, metaphor, figurative and even moral language. The dusty wind is given moral purpose by calling it evil.
In the same way, when the Old Testament prophets were allowed to see real future events, they also found that normal descriptive language failed them; so they resorted to the kind of figurative language we call apocalyptic. Like this.
As for the appearance of the wheels and their construction: their appearance was like the gleaming of beryl. And the four had the same likeness, their appearance and construction being as it were a wheel within a wheel. When they went, they went in any of their four directions without turning as they went. And their rims were tall and awesome, and the rims of all four were full of eyes all around. (Ezekiel 1:16-18 ESV)
The prophets are not being deliberately obscur. Nor were they engaged in wild fantasizing. They were just expressing as best they could events they saw in visions that were beyond their words.