The predator is not abolished here. His power is transformed into what he chooses to do with it. The wolf keeps his strength and grazes beside the lamb; the lion, still a lion, no longer needs to devour. Capacity for violence remains, harnessed and turned toward peace.
A monster who cannot be dangerous is merely weak, and weakness is no virtue. The vision holds up something harder: the strong made gentle by choice, their teeth intact, their appetite governed. On the holy mountain nothing is destroyed, because the powerful have decided not to. Strength that restrains itself is what makes lasting peace possible.