Daimonion (Thayer's Greek Definitions: a god, divinity, a being inferior to GOD but superior to men).
A daimonion is a god:
Act 17:18-22 Then also, some of the Epicurean and Stoic philosophers argued with Paul. Some said, "What is this plagiarist trying to say?" Others replied, "He seems to be a preacher of two new daimonion (gods)"--because he was telling the good news about "Yeshua" and "The Resurrection". They took him and brought him to the Areopagus, and said, "May we learn about this new teaching you're speaking of? For what you say sounds strange to us, and we want to know what these ideas mean." Now all the Athenians and the foreigners residing there spent their time on nothing else but telling or hearing something new. Then Paul stood in the middle of the Areopagus and said: "Men of Athens! I see that you are extremely religious and pious in every respect".
Socrates was censured for believing in supernatural things of his own invention instead of the gods recognized by the State. Socrates had introduced new gods called xenon daimonion (strange gods). Socrates attributed intuition to the daimonas.
A daimonion is an idol:
Psa 106:34-39 They did not destroy the nations as YHVH had commanded them, but mingled with the nations and adopted their ways. They served their idols, which became a snare to them, in that they slaughtered their sons and daughters to demons (shadim - the Idols of Canaan), that is to say, they shed innocent blood--the blood of their sons and daughters whom they slaughtered to the Idols of Canaan; so the land became polluted with blood. They defiled themselves by their actions and prostituted themselves by their own inventions.
Rev 9:20 The rest of the people, who were not killed by these plagues, did not repent of the works of their hands, to stop worshiping the daimonia (even idols of gold, silver, bronze, stone, and wood) which are not able to see, hear, or walk.
A daimonion is a fabrication:
Psa 115:4-8 The idols of the nations are silver and gold, made by their hands. They have mouths, but cannot speak, eyes, but cannot see. They have ears, but cannot hear, noses, but cannot smell. They have hands, but cannot feel, feet, but cannot walk. They cannot make a sound with their throats. Those gentiles who make them are just like them (deaf, dumb, and lame), as are all who trust in them.
Deu 4:27-28 YHVH shall scatter you among the nations, and ye shall be left few in number (fragmented) among the gentiles, whither YHVH shall lead you away. And there ye shall serve gods, the work of their hands, wood and stone, which neither see, nor hear, nor eat, nor smell (1Cor 12:2).
Isa 37:18-20 Of a truth, YHVH, the kings of Assyria have laid waste all the nations, and their countries, and have cast their gods into the fire; for they were no-gods, the work of men's hands, wood and stone; therefore they have destroyed them. Now therefore, O YHVH our Elohim, save us from his hand, that all the kingdoms of the earth may know that thou art YHVH, even thou only.
A daimonion is imaginary:
Deu 32:16-21 They roused Him to jealousy with strange gods, with abominations did they provoke Him. They slaughtered unto demons (shadim - the Idols of Canaan; see Psa 106:34-39, above), that is, no-gods, gods that they knew not, new gods (Act 17:18-22) that came up of late, which your fathers dreaded not. Of the Rock that begot thee, thou were unmindful, and did forget Elohim that bore thee. And YHVH saw, and spurned, because of the provoking of His sons and His daughters. And He said, "I will hide My face from them, I will see what their end shall be; for they are a very perverse generation, children in whom is no faithfulness. They have roused Me to jealousy with a no-god, that is, they have provoked Me with their vanities; and I will rouse them to jealousy with a no-people; I will provoke them with a foolish nation".
In Hebrew, the word "vanity" is habel, which means a transitory or fanciful idea. All the gods are fanciful, fictitious, no-gods; 1Kin 18:26-29.
Deu 32:39 See now that I even I alone am He; there is no god but Me. I bring death and I give life; I wound and I heal. No one can rescue anyone from My hand. (Note: He alone determines life and death, He alone controls man's fate; Exo 4:11. To attribute calamity, tribulation, sickness, or death to another god is idolatry).
The daimonia are idols and therefore they are a product of a fanciful imagination (Act 19:26). In the Torah-Prophets-Writings (Tanach) there is no mention of a daimonion possessing anyone. There are no exorcisms in the Tanach.
There is mention of familiar spirits, which is ventriloquism. Evil and lying spirits are messengers and events under the direct control of YHVH (1Sam 16:14; 1Kin 22:23; see Job 42:11). And unclean spirits are lies (Zec 13:2-4). An example of this analogy of unclean spirits as lies is illustrated in Rev 16:13-14: "And I saw out of the mouth of the dragon and out of the mouth of the beast and out of the mouth of the false prophet three lies, analogous to frogs" (in Classical Greek, the word for frog implied a problem with the tongue; and the root word for frogs in Hebrew means dubious or untrustworthy). "Because these three lies are spirits (characteristic motives, Pro 16:2-3 NASB) of daimonion (the character of idolatry is fanaticism), performing signs to rouse the kings of the whole earth (the empire of the beast as described in the chapter called "666") together, to the battle of the Great Day of El Shaddai".
Toward the end of the Second Temple period, the word "daimonion" was used Socratically to attribute culpability to internal influences. The Greek text for the Book of James used it as a slur, to demonstrate that even daimonia (the lunatics who show partiality, Jam 2:4) acknowledge the truth of the 4th verse of Deuteronomy Chapter Six (Jam 2:19). It was used as a colloquialism to describe physical or mental illness (much like the word "influenza" which means influenced by the planets or "lunatic", which is still in use, but no longer calls attention to someone effected by the phases of the moon, Mat 4:24). In the Greek text of John 10:19-21 we read, "Again a division took place among the Judeans because of Yeshua's sayings. Many of them were saying, 'He has a daimonion, that is, he is mad! Why do you listen to Him'? Others were saying, 'These aren't the words of someone that is daimonizomai (has a madness). Can a daimonion (a madman) open the eyes of the blind'?"
In Mark Chapter Three, we read, "When Yeshua's family heard this, they set out to restrain him, because his family said, 'He's out of his mind'. The Talmudic teachers who had come down from Jerusalem said, 'He has Beelzebub in him’ (he has a madness attributed to his association with idolaters) and, 'He drives out this daimonion (madness) by the ruler of the daimonia' (under the influence of idolatry)" (Mar 3:21-22).
Beelzebub is a pagan god (2Kin 1:2). He is another of the "vanities" mentioned in Deu 32:16-21. He is imaginary! Belief in the existence of either Beelzebub or the daimonia is idolatry (2Kin 17:34-39).
Using terms associated with a daimonion as medical euphemisms was Galilean slang.
Mat 8:5, 16-17 And when Yeshua was entered into Capernaum ... when evening came, they brought to him many who were daimonizomenous (sick). He drove out the spirits (healed them) with a word, that is, he healed all who were sick, so that what was spoken through the prophet Isaiah might be realized (cp. Mat 15:30-31): He Himself took away (healed) our weaknesses and carried away (healed) our diseases.
There are two other events in the northern kingdom of Israel, associated with a daimonion, that should be considered:
1. Having a session with a patient who exhibited multiple personality traits (Mat 8:28-29) was therapeutic (see Luk 8:35). In Luk 8:30, Yeshua asked, "What is your name?" And the man with severe mental disorders said, "Legion", because he had imagined many daimonia.
“Imagine” comes from the Greek word eiserchomai, used in Classical Greek for something that originated from within the individual, such as a thought: "even though he was in such a wretched position it occurred to him", Herodotus Histories 1.86.
2. To infect 2000 pigs being raised in the Land of Israel was recognized as irony (Mar 5:13), but for the tomb-dweller, it was closure (Mar 5:15).
Isa 65:3-4 (Septuagint) These people continually provoke Me to My face, sacrificing in gardens, burning incense on bricks to daimonion, which exist not, sitting among the graves, spending nights in secret places, eating swine's flesh, and putting polluted broth in their bowls.