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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When the evening was come, they brought to him many that were possessed with demons: and he cast out the spirits with his word, and healed all that were sick;
And Jesus saith to him, The foxes have holes, and the birds of the air have nests; but the Son of man hath not where to lay his head.
And when he had called to him his twelve disciples, he gave them power against unclean spirits, to cast them out, and to heal all manner of sickness, and all manner of disease.
When the unclean spirit is gone out of a man, he walketh through dry places, seeking rest, and he findeth none. Then he saith, I will return into my house from whence I came out; and when he is come, he findeth it empty, swept, and garnished. read more. Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there: and the last state of that man is worse than the first. Even so shall it be also to this wicked generation.
Then will he say also to them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
And demons also came out of many, crying out, and saying, Thou art Christ the Son of God. And he rebuking them, suffered them not to speak: for they knew that he was Christ.
For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
Thou believest that there is one God; thou doest well: the demons also believe, and tremble.
And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, And prevailed not; neither was their place found any more in heaven. read more. And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out upon the earth, and his angels were cast out with him.
For they are the spirits of demons, working miracles, which go forth to the kings of the earth, and of the whole world, to gather them to the battle of that great day of God Almighty.