Notes on Demons

From Vine’s Complete Expository Dictionary  

Daimon, “a demon,” signified, among pagan Greeks, an inferior deity, whether good or bad. In the New Testament it denotes “an evil spirit.” It is from a root da –, meaning “to know,” and hence means “a knowing one.”

Daimonion, “demons” are the spiritual agents acting in all idolatry. The idol itself is nothing, but every idol has a “demon” associated with it who induces idolatry, with its worship and sacrifices (1 Corinthians 10:20-21; Revelation 9:20; Deuteronomy 32:17; Isaiah 13:21; 34:14; 65:3, 11). They disseminate errors among men, and seek to seduce believers (1 Timothy 4:1). As seducing spirits they deceive men into the supposition that through mediums (those who have “familiar spirits,” Leviticus 20:6, 27) they can converse with deceased human beings. Hence the destructive deception of spiritism, forbidden in Scripture (Leviticus 19:31; Deuteronomy 18:11; Isaiah 8:19).

“Demons” tremble before God (James 2:19); they recognized Christ as Lord and as their future Judge (Matthew 8:29; Luke 4:41). Christ cast them out of human beings by His own power. His disciples did so in His name, and by exercising faith (Matthew 17:20). Acting under Satan (Revelation 16:13-14), “demons” are permitted to afflict with bodily disease (Luke 13:16). They differ in degrees of wickedness (Matthew 12:45). They will instigate the rulers of the nations at the end of this age to make war against God and His Christ (Revelation 16:14).

Daimonizomai signifies “to be possessed of a demon, to act under the control of a demon.” Those who were thus afflicted expressed the mind and consciousness of the “demon” or “demons” indwelling them (Luke 8:28). (See also Matthew. 4:24; 8:16, 28, 33; 9:32; 12:22; 15:22; Mark 1:32; 5:15-16, 18; Luke 8:36.)