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 even was come, they brought unto him many possessed with demons: and he cast out the spirits with a word, and healed all that were sick:
And Jesus saith unto him, The foxes have holes, and the birds of the heaven have nests; but the Son of man hath not where to lay his head.
And he called unto him his twelve disciples, and gave them authority over unclean spirits, to cast them out, and to heal all manner of disease and all manner of sickness.
But the unclean spirit, when he is gone out of the man, passeth through waterless places, seeking rest, and findeth it not. Then he saith, I will return into my house 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 evil than himself, and they enter in and dwell there: and the last state of that man becometh worse than the first. Even so shall it be also unto this evil generation.
Then shall he say also unto them on the left hand, Depart from me, ye cursed, into the eternal 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 rebuking them, he suffered them not to speak, because they knew that he was the Christ.
For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world-rulers of this darkness, against the spiritual hosts of wickedness in the heavenly places .
Thou believest that God is one; thou doest well: the demons also believe, and shudder.
And there was war in heaven: Michael and his angels going forth to war with the dragon; and the dragon warred and his angels; And they prevailed not, neither was their place found any more in heaven. read more. And the great dragon was cast down, the old serpent, he that is called the Devil and Satan, the deceiver of the whole world; he was cast down to the earth, and his angels were cast down with him.
for they are spirits of demons, working signs; which go forth unto the kings of the whole world, to gather them together unto the war of the great day of God, the Almighty.