“Every kingdom divided against itself will be ruined, and every city or household divided against itself will not stand. If Satan drives out Satan, he is divided against himself. How then can his kingdom stand? And if I drive out demons by Beelzebub, by whom do your people drive them out? So then, they will be your judges. But if I drive out demons by the Spirit of God, then the kingdom of God has come upon you.” (Matthew 12:25-27)

Jesus' statement follows criticism by the Pharisees after Jesus healed a blind mute person.

Following the people witnessing this proclaiming that Jesus must be the “son of David” (see below), the Pharisees made offensive statements about Jesus, accusing him of being satan or a demon.

Jesus questioned these statements logically: Why would a demon remove other demons? That would create a house divided.

Jesus was able to extract demons utilizing the Spirit of God, who is the Supreme Controller, having the ultimate ability to control everything, including where demons live. This contradicts any notion that God somehow has a competitor in satan.

God has no competitor. The Supreme Being controls everything.

At the same time, however, the Supreme Being gives each of His children the choice of loving Him or not.  For those of us who choose not to love Him - our natural need to love turned inward, producing self-centeredness.

This self-centeredness caused our downfall to the physical world and required our taking on these temporary physical bodies. This was described in Genesis:
The Lord God made garments of skin for Adam and his wife and clothed them. (Genesis 3:21)
Now what would would these "garments of skin" be then? They are physical bodies, since our physical bodies are each covered by skin. 

The purpose of this world and these bodies is to teach us - in hopes that we might one day choose that we would like to return to our relationship with the Supreme Being.

Until then, our self-centeredness can expand into lust, greed, envy and even violence as we chase the illusory dreams of the physical world. This is why this physical world is hell - because this is where the self-centered souls are sent.

In other words, while there is no competitor to the Supreme Being, there are many who have become, as a result of our self-centeredness, envious of Him.

This is why so many of us strive to win. We want to be the champion. We want to be in first place and have everyone adore us. So each of us tries to find our little niche - our sport or skill - that we can win within.

What is this need to win? It is the desire to be king - to be adored and worshiped.

In other words, we want to occupy the post of God. We want to be God.

This is the strict definition of a demon - someone who is envious of the Supreme Being.

This concept of driving out demons has been quite controversial in modern times. Modern scientists have questioned the concept of demon possession, while the media has perverted the concept in movies and other dramatizations.

But now that we realize that practically every person within the physical world - to one degree or another - is a demon, we can now focus upon what is possession and what is demon exorcism.

Because we are not these physical bodies, we can either possess a physical body or not. When a person dies and remains attached to the things surrounding their former physical body - or they commit suicide - they are forced into the ethereal dimension - without a gross physical body. But because they still have their subtle physical body - wrapped around their mind - they are able to see into the gross physical world but not participate within it.

This is extremely frustrating for such a person. For those who are determined to participate, they may attempt to occupy another's physical body - even for a temporary period.

Avenues to gain control over another's physical body include entering when they are intoxicated or their connection to the body is otherwise weakened. This can happen during an illness for example.

But such a demon coming in during intoxication is quite frequent actually. This is why people often change when they drink. It is not that they actually change, but their body is being controlled by another person. This forms what is often called the “Jekyl and Hyde complex.”

This is because the alcohol allows the demon who has gotten in to take more control over the body’s activities while the personality's attachment is weakened by the alcohol. Other activities that can offer these ghost/demons entry include drugs, ritualistic ceremonies and chemical or psychological imbalances - all of which can open the nerve pathways to outside entry.

This type of demon possession can be exercised by God's representative. Ultimately it is the Supreme Being who has the power of expulsion. Even the Names of God can expunge a demon. Jesus’ method was described repeatedly: He touched the person while he prayed to or praised the Supreme Being. The prayer and praise brought upon that person the Supreme Being's presence, which drove out the demon.

Note also that Jesus' followers seem to have referred to Jesus as the "son of David." Does this make sense in a literal context, however? David had lived some 1,000 years before. Does it make sense that someone would be called the son of someone born several centuries earlier?

This is a translation error. The Greek word υἱός (huios) - as discussed elsewhere - only means "son" in a restricted sense according to the lexicon. The lexicon states the word also means, "used to describe one who depends on another or is his follower."

This is precisely the connection between David and Jesus. Jesus was a follower of David's teachings. He came within the teaching lineage of David - an empowered lineage of teachers and students that is often confused with a family lineage.

The teacher-student lineage was maintained throughout the Old Testament, and this was not always within the family, for example, we know that Melchizedek was Abraham's teacher, and Abraham was Lot's teacher. And Moses was Joshua's teacher. And Eli was Samuel's teacher. On and on we see the teacher-student lineage as it passes through the Biblical scriptures outside of the family structure.

Yet those who are attached to their physical body like to pervert this great prophetic lineage by claiming it as a family heritage. This was especially true for those who wanted to believe that their race - their particular heritage - is somehow the "chosen people."

Why? Why do they want to be the "chosen people"? Because they want to be the best. They want to win. They want to feel superior to others.

This is our disease, and this is why Jesus is warning us - that if we continue our self-centered consciousness, it will simply bring us greater suffering and greater misery as we reap the results of our activities here in hell.

But Jesus' teachings can save us from this misery, and from hell. Jesus confirms this as he says above:
"But if I drive out demons by the Spirit of God, then the kingdom of God has come upon you.”