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 evening came, they brought to him many that were possessed by demons; and he cast out the spirits with a word, and healed all that were sick;
And Jesus saith to him, The foxes have holes, and the birds of the air have lodgingplaces; but the Son of man hath not where to lay his head.
And he called to him his twelve disciples, and gave them power over unclean spirits, to cast them out, and to heal every sickness and every disease.
But when the unclean spirit is gone out from a man, it goeth through dry places, seeking rest, and findeth it not. Then it saith, I will return to my house whence I came out. And on coming, it findeth it empty, and swept, and put in order. read more. Then it goeth and taketh with it seven other spirits more wicked than itself, and they enter in, and dwell there; and the last state of that man becometh worse than the first. So will it be also with this wicked generation.
Then will he say also to those on the left hand, Depart from me, ye cursed, into the everlasting fire, which is prepared for the Devil and his angels.
And demons also came out from many, crying out, and saying, Thou art the Son of God. And he rebuked them, and did not suffer them to speak, because they knew that he was the Christ.
for our wrestling is not against flesh and blood, but against principalities, against powers, against the worldrulers of this darkness, against the spiritual hosts of evil in the heavenly regions.
Thou believest that God is one; 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 down, the old serpent, called the Devil and Satan, who deceiveth the whole world; he was cast down to the earth, and his angels were cast down with him.
for they are the spirits of demons, working signs, which go forth to the kings of the whole world, to gather them to the battle of that great day of God l Almighty.