Who are the beings from the kingdom of evil?
Demons are also called devils, unclean spirits, demons and denizens of the hoary underworld. They struggle against all that is holy, sacred and good, seeking ever to corrupt the innocent, destroy the beauty of the cosmos, plunge the universe into chaos, and snuff out the perfect and unapproachable light of God's Love.
They are spirit beings that have an intense craving to occupy physical bodies. Apparently, their first choice is a human body but rather than remain in a disembodied condition, they are willing to enter even the body of an animal. (Lk. 8:32-33)
What is their origin?
They are fallen angels that decided to rebel against God and aligned with their leader and chief demon, Satan. In his original rebellion, Satan drew with him a great number of angels perhaps a third of all created (Ezek. 28:18, Rev. 12:4.)
They may now be classified as either confined or free. The free have their abode in the heavenlies and have access to earth and its inhabitants (Eph. 3:10, 6:12) Some are in the abyss or pit (Rev. 9:1-11) a place to which Christ cast many. (Lk. 8:31) Others are bound on earth in river Euphrates (Rev. 9:14) (Jude 1:6) describes a particularly wicked group of demons as "kept in eternal bonds".
To find out more about demons and the process of deliverance, click here.