The purpose of any spirit dwelling in a human or animal body is to control the human or animal body.

Nu. 22:27 When the donkey saw the angel of the LORD, she lay down under Balaam, and he was angry and beat her with his staff.
Nu. 22:28 Then the LORD opened the donkey’s mouth, and she said to Balaam, “What have I done to you to make you beat me these three times?”
Nu. 22:29 Balaam answered the donkey, “You have made a fool of me! If I had a sword in my hand, I would kill you right now.”
Nu. 22:30 The donkey said to Balaam, “Am I not your own donkey, which you have always ridden, to this day? Have I been in the habit of doing this to you?” “No,” he said.
Nu. 22:31 Then the LORD opened Balaam’s eyes, and he saw the angel of the LORD standing in the road with his sword drawn. So he bowed low and fell face down.
Nu. 22:32 The angel of the LORD asked him, “Why have you beaten your donkey these three times? I have come here to oppose you because your path is a reckless one before me.

God put His Spirit in a donkey and enabled the donkey to speak its mind, like a human being; that is spirit control. Do donkeys normally reason in their minds, but are unable to speak? I wish a Professor of Biology could research on this question.

Lk. 8:27 When Jesus stepped ashore, he was met by a demon-possessed man from the town. For a long time this man had not worn clothes or lived in a house, but had lived in the tombs.
Lk. 8:28 When he saw Jesus, he cried out and fell at his feet, shouting at the top of his voice, “What do you want with me, Jesus, Son of the Most High God? I beg you, don’t torture me!”
Lk. 8:29 For Jesus had commanded the evil spirit to come out of the man. Many times it had seized him, and though he was chained hand and foot and kept under guard, he had broken his chains and had been driven by the demon into solitary places.
Lk. 8:30 Jesus asked him, “What is your name?” “Legion,” he replied, because many demons had gone into him.
Lk. 8:31 And they begged him repeatedly not to order them to go into the Abyss.
Lk. 8:32 A large herd of pigs was feeding there on the hillside. The demons begged Jesus to let them go into them, and he gave them permission.
Lk. 8:33 When the demons came out of the man, they went into the pigs, and the herd rushed down the steep bank into the lake and was drowned.

A legion of demons possessed a man and turned him into a beast. When Jesus appeared on the scene the demons used the man’s body to converse with Jesus. The demons completely overrode the man’s mind and communicated with Jesus using the man’s body. When Jesus drove the demons out of the man and allowed the demons to go into a herd of pigs, the demons drove the herd into a nearby lake. This is a clear demonstration of spirit control of animals.

When the Holy Spirit comes into a man

Mt. 12:43 “When an evil spirit comes out of a man, it goes through arid places seeking rest and does not find it.
Mt. 12:44 Then it says, `I will return to the house I left.’ When it arrives, it finds the house unoccupied, swept clean and put in order.
Mt. 12:45 Then it goes and takes with it seven other spirits more wicked than itself, and they go in and live there. And the final condition of that man is worse than the first. That is how it will be with this wicked generation.”

When the Holy Spirit comes into a man, the evil spirit in the man leaves. The man becomes clean for some time. But the evil spirit will take with it more wicked spirits than itself and seek to repossess the man. Unless the man is spiritually active, the Holy Spirit will not oppose the evil spirits as they come to repossess the man. The Holy spirit does not impose Himself on any man.

Ge. 1:2 Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.
Ge. 1:3 And God said, “Let there be light,” and there was light.

Here was a situation that was characterized by formlessness, emptiness and darkness; yet the Spirit of God was present in the situation and did nothing. It wasn’t until the person who has control over the Spirit spoke control word to the Spirit that the Spirit swiftly changed the situation from darkness to light.

1Co. 14:32 The spirits of prophets are subject to the control of prophets.

The Holy Spirit in a son of God is subject to the control of the son of God. If the son of God does not issue control words to the Spirit, evil spirits could come into the son of God and create a life of formlessness, emptiness and darkness. This is the situation of many Christians who have the Holy Spirit.

Living by the Spirit

Ga. 5:16 So I say, live by the Spirit, and you will not gratify the desires of the sinful nature.
Ga. 5:17 For the sinful nature desires what is contrary to the Spirit, and the Spirit what is contrary to the sinful nature. They are in conflict with each other, so that you do not do what you want.
Ga. 5:18 But if you are led by the Spirit, you are not under law.

To live by the Spirit means to run your life by the power of the Holy Spirit that God has given you, just as God runs the universe though His Spirit. You operate the power of the Spirit in you by speaking control words.

Ro. 10:8 The word is near you; it is in your mouth and in your heart, that is, the word of faith we are proclaiming.

The first thing to do by the Spirit is eliminate from your body every indwelling evil spirit. You can speak a follows:

“In the mighty name of the Lord Jesus Christ, I drive out of my body every evil spirit by the finger (or Spirit) of God. Holy Spirit of the Most High, drive out of my body every idol or demon, with fire, in the name of Jesus Christ. Holy Spirit, take control of my being; I pray in the name of Jesus Christ”

I say the above words, or something similar to it, every time I pray. As you continue to speak this kind of word of faith, you will discover that all the unholy habits and characters in your life are caused by evil spirits. You will see yourself growing in righteousness.

Ga. 5:18 says that any person who lives by the Spirit is not under law. Christians understand it to mean that any person that is born again should no longer keep the laws of God and they claim that Apostle Paul taught them that. In reality, what Ga. 5:18 says is that if the Holy Spirit is in control of your life, you don’t need to be guided by the laws of God, because the Spirit will move you to be living in accordance with the laws of God.

These Signs will follow you

Mk. 16:17 And these signs will accompany those who believe: In my name they will drive out demons; they will speak in new tongues;
Mk. 16:18 they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well.”

It is not only righteousness that you can achieve through the Spirit. You can drive out demons from other people, by the Spirit. You can heal the sick, by the Spirit. All it takes is issuing appropriate control word.

Ph. 4:13 I can do everything through him who gives me strength.

“Him” in Ph. 4:13 refers to the Holy Spirit of God in you. As you grow in righteousness and in faith, the list of things you can do through the Spirit grows. Everything is possible to him that has faith (Mk. 9:23).