Angels & Demons
Fallen Angels & Demons - What's the Difference?
Both angels and demons are spirit. They are able to interact with human and animal flesh but they themselves have no bodies. They are persons without bodies.
Fallen angels are the angels that joined the devil's (Satan, Lucifer, the dragon) rebellion against God.
Demons are never mentioned as part of the devil's original rebellion. Demons are described in the Gospels in a fair amount of detail. Several creditable Hebrew and Greek scholars have made very compelling cases that demons are the disembodied spirits of dead Nephalim who were the offspring of fallen angels and women. See "Are Demons Angels?"
Scriptures on Fallen Angels
Depart from me, you cursed, into the eternal fire prepared for the devil and his angels (Matt 25:41 ESV)
7 Now war arose in heaven, Michael and his angels fighting against the dragon. And the dragon and his angels fought back, 8 but he was defeated, and there was no longer any place for them in heaven. 9 And the great dragon was thrown down, that ancient serpent, who is called the devil and Satan, the deceiver of the whole world—he was thrown down to the earth, and his angels were thrown down with him. (Revelation 12:7-9 ESV)
Scriptures on Demons (AKA Evil Spirits, Unclean Spirits)
And when he came to the other side, to the country of the Gadarenes, two demon-possessed men met him, coming out of the tombs, so fierce that no one could pass that way. (Matthew 8:28 ESV)
But if it is by the Spirit of God that I cast out demons, then the kingdom of God has come upon you. (Matthew 12:28 ESV)
43 “When the unclean spirit has gone out of a person, it passes through waterless places seeking rest, but finds none. 44 Then it says, ‘I will return to my house from which I came.’ And when it comes, it finds the house empty, swept, and put in order. (Matthew 12:43-44 ESV)
In that hour he [Jesus] healed many people of diseases and plagues and evil spirits, and on many who were blind he bestowed sight. (Luke 7:21 ESV)
Then it goes and brings seven other spirits more evil than itself, and they enter and dwell there. And the last state of that person is worse than the first.” (Luke 11:26 ESV)
11 And God was doing extraordinary miracles by the hands of Paul, 12 so that even handkerchiefs or aprons that had touched his skin were carried away to the sick, and their diseases left them and the evil spirits came out of them. (Acts 19:11-12 ESV)
Link to scriptures above: Matt 8:28, 12:28, 12:43-44; Luke 7:21, 11:26; Acts 19:11-12
- Bible Tools, Bible verses about Lucifer's Rebellion, http://www.bibletools.org/index.cfm/fuseaction/Topical.show/RTD/cgg/ID/486/Lucifers-Rebellion.htm [good commentary but incorrectly equates angels with demons]