Reference: Daemon
Easton
the Greek form, rendered "devil" in the Authorized Version of the New Testament. Daemons are spoken of as spiritual beings (Mt 8:16; 10:1; 12:43-45) at enmity with God, and as having a certain power over man (Jas 2:19; Re 16:14). They recognize our Lord as the Son of God (Mt 8:20; Lu 4:41). They belong to the number of those angels that "kept not their first estate," "unclean spirits," "fallen angels," the angels of the devil (Mt 25:41; Re 12:7-9). They are the "principalities and powers" against which we must "wrestle" (Eph 6:12).
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And when the evening was come, they brought to him many possessed by demons, and he cast out the spirits with a word, and healed all that were ill;
And Jesus says to him, The foxes have holes, and the birds of the heaven roosting-places; but the Son of man has not where he may lay his head.
And having called to him his twelve disciples, he gave them power over unclean spirits, so that they should cast them out, and heal every disease and every bodily weakness.
But when the unclean spirit has gone out of the man, he goes through dry places, seeking rest, and does not find it. Then he says, I will return to my house whence I came out; and having come, he finds it unoccupied, swept, and adorned. read more. Then he goes and takes with himself seven other spirits worse than himself, and entering in, they dwell there; and the last condition of that man becomes worse than the first. Thus shall it be to this wicked generation also.
Then shall he say also to those on the left, Go from me, cursed, into eternal fire, prepared for the devil and his angels:
and demons also went out from many, crying out and saying, Thou art the Son of God. And rebuking them, he suffered them not to speak, because they knew him to be the Christ.
because our struggle is not against blood and flesh, but against principalities, against authorities, against the universal lords of this darkness, against spiritual power of wickedness in the heavenlies.
Thou believest that God is one. Thou doest well. The demons even believe, and tremble.
And there was war in the heaven: Michael and his angels went to war with the dragon. And the dragon fought, and his angels; and he prevailed not, nor was their place found any more in the heaven. read more. And the great dragon was cast out, the ancient serpent, he who is called Devil and Satan, he who deceives the whole habitable world, he was cast out into the earth, and his angels were cast out with him.
for they are the spirits of demons, doing signs; which go out to the kings of the whole habitable world to gather them together to the war of that great day of God the Almighty.