Why is everything in 1/3 in Revelations ? Ex. 1/3 of this destroyed, 1/3 of that
As with any part of Revelation there are primarily four main theories. Coincidentally most of them take the 1/3 literally regardless of the view as represented a significant judgment but minority (only 1/3) implicated result on the things in this world that otherwise sustain life. Here are the main views very briefly and overly simplified as pertaining one example:
When barbarians attacked Rome in ~AD 410, there was burning or destroying everything in their path. Approximately 1/3 of the Roman Empire was ravaged.
Similar to historicist but everything sandwiched around the sacking of Israel by Rome. Therefore destruction of actual vegetation in the land around Jerusalem. Let's assume around 1/3.
The most literal of all views with everything in the future, probably a literal 1/3 of the earth destroyed by nuclear bombs or something like it in whatever kind of bombs that might exists in the unknown future.
Basically the obvious symbolism that can be imagined. For example 'whatever' kind of destruction which at any time damages the earth such as what we see on the news. Maybe 1/3 is actually greater then what is actual but symbolism does not need to literally match the figure employed.
Note: I am a rare bird these days as I have unexpectedly switched from Symbolic to the Historicist view, which is really not that popular anymore. I started out in my teens as a futurist, moved to Symbolic, almost became a Preterist just before resting in my current view, Historicist. This is how I have became familiar with them over the last 25 years.
It must first be noted that the Revelation is divided into 3 parts;
Revelation 1:19 KJV
The first part is the things which the Lord Jesus had already shown him, the second is the things that were and the third part is the things which will be.
where the one third part comes in has mainly to do with the things that were, which in the main cover the Angelic rebellion in Heaven and the ejection of Satan and the rebellious Angels from Heaven.
The Scripture tells us that a third part of the Angels in Heaven revolted with Lucifer.
Rev 12:3 and 4 KJV