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 had come, they brought to him many that were possessed with demons: and he cast out the spirits with his word, and cured all that were sick;
And Jesus said to him: The foxes have dens, and the birds of the air have roosts; but the Son of man has not where to lay his head.
And he called to him his twelve disciples, and gave them authority over unclean spirits, so that they might cast them out, and care every disease and every infirmity.
When the unclean spirit has gone out of a man, he goes through dry places seeking rest, and finds none. Then he says: I will return to my house, out of which I came. And he comes and finds it empty, swept, and. set in order. read more. Then he goes and takes 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. So shall it be with this wicked generation.
Then will he say to those on his left hand: Depart from me, you cursed, into the eternal fire, prepared for the devil and his angels.
Demons also came out of many, crying out and saying: Thou art the Christ, the Son of God. And he rebuked them, and did not permit them to speak, because they knew that he was the Christ.
for our conflict is not with flesh and blood, but with the principalities, with the authorities, with the rulers of the darkness of this world, with the wicked spirits in the heavenly regions.
You believe that there is one God; you do well: the demons also believe, and tremble.
And there was war in heaven; Michael and his angels fought with the dragon; and the dragon and his angels fought, and prevailed not: nor was their place found any more in heaven. read more. And the great dragon, that old serpent, called the Devil, and Satan, who deceives the whole world, was cast into the earth, and his angels were cast out with him.
For they are the spirits of demons that do signs, and they go forth to the kings of the whole world, to bring them together to the battle of that great day of God Almighty.