I've thought all my life that demons (and evil spirits) were fallen angels, but I recently encountered the viewpoint that these demons are actually the souls of men who have already died but wouldn't go to Heaven. Hence, what does the Bible say about this?
The concept of fallen angels is based on the following scriptures.
Regarding the belief that you become an angel when you die, the following scriptures come to mind.
If we are joint heirs with Christ, then one day we shall be like him.
After his resurrection He was made "better than the angels". If we are to be like Him, then we also will be "better than the angels".
The idea that we would become angels (either 'good' or 'fallen') when we die originated from a misinterpretation of Matthew 22:30 and Mark 12:25.
The context of these verses is the subject of marriage. Angels do not have wedding ceremonies, and neither will we in heaven. Using these verses as the basis for the belief that we will one day be angels is a bit of a stretch.
The Master taught us that there were two classes of evil spirits he would give us authority over:
SCORPIONS & SNAKES
These snakes are the same species (and metaphor), mentioned at The Fathers Declaration of War here:
This is prophetic of Jesus subduing all the demons in Hell and disarming them. This should explain the demons/snakes so ...
Why did the Father not mention the 'Scorpions'? well simply its because - No one had died yet. Scorpions are a new development that occur AFTER the flood. Smoking gun evidence that its afterlife activity of the unrepentant. The Lord classified these types "scorpions". Fallen angels are designated serpents after their first attack vehicle.
As I have answered here, I will repost it.
Some of you will say that the bible verse I have used only proves that there are demons. However, there is no reference in the bible as far as I can see that says that angels can control a person.