[VRWC_minion]

On the metaphorical sense, the text discuss eating from the tree of knowledge and the tree of life. Satan is being told he cannot eat from these trees and is condemned to eating dust. Dust is a symbol for death as in ashes to ashes, dust to dust.

This is a very powerful and hard sentence that is being meted out to a fallen angel.

[VOA]

Dust is a symbol for death as in ashes to ashes, dust to dust.

Now y'all are being a bit hard on dust (or dirt).
Surely you've heard about how the world's molecular biologists decided that they'd
learned enough to let them create new life from scratch. Just like G-d did.
So the molecular biologists and G-d met in order to have a smack-down contest...
When the molecular biologists reached down to scoop up some dust of the earth
to toss in with their batch of life-creating chemicals, G-d roared
"Just a darned second there fellows...first you've got to make the dirt out of nothing...
and I've got the patent on that process. And lots of other things."