Jesus, as recorded in Luke 11 was accused of being the devil casting out the devil. His response to those accusers comes with so much revelation, lets look.
Luke 11:17-But He, [well] aware of their intent and purpose, said to them, Every kingdom split up against itself is doomed and brought to desolation, and so house falls upon house. [The disunited household will collapse.] 18 And if Satan also is divided against himself, how will his kingdom last? For you say that I expel demons with the help of and by Beelzebub. 19 Now if I expel demons with the help of and by Beelzebub, with whose help and by whom do your sons drive them out? Therefore they shall be your judges.20 But if I drive out the demons by the finger of God, then the kingdom of God has [already] come upon you. 21 When the strong man, fully armed, [ from his courtyard] guards his own dwelling, his belongings are undisturbed [his property is at peace and is secure].22 But when one stronger than he attacks him and conquers him, he robs him of his whole armor on which he had relied and divides up and distributes all his goods as plunder (spoil).23 When the strong man, fully armed, [from his courtyard] guards his own dwelling, his belongings are undisturbed [his property is at peace and is secure]. 22 But when one stronger than he attacks him and conquers him, he robs him of his whole armor on which he had relied and divides up and distributes all his goods as plunder (spoil). 23 He who is not with Me [siding and believing with Me] is against Me, and he who does not gather with Me [engage in My interest], scatters.24 When the unclean spirit has gone out of a person, it roams through waterless places in search [of a place] of rest (release, refreshment, ease); and finding none it says, I will go back to my house from which I came.25 And when it arrives, it finds [the place] swept and put in order and furnished and decorated.26 And it goes and brings other spirits, seven [of them], more evil than itself, and they enter in, settle down, and dwell there; and the last state of that person is worse than the first. AMPC
Jesus is saying so much here. First He addresses the the people, shall I bluntly say? —of their stupid speculations. Then —He goes on to further our knowledge of what is overtaking them and how we can keep from having the same (I will say it again) stupidity.
So let's start with, what is an unclean spirit and how does he occupy our temple? An unclean spirit is the devil or his workers —he occupies when we let his suggestions rule us. He has a place to stay when we let him dwell in our minds.
Corinthians confirms what Jesus said, we are instructed to take captive every thought and make it to be like Jesus, to agree with Him, the Word (2 Corinthians 10:4-5).
Acts 10:38 —Jesus went around doing good curing all who were harassed and oppressed by the devil. Clearly we are taught here that the enemy is a thought. The Word says the enemy is harassing and oppressing. How else can he harass and oppress except in our thinking? Therefore Jesus is curing those/us with revelation knowledge (Acts 10:38).
Just like Jesus was doing that day when the people were accusing Him of being the devil, He is doing the same now. Just as He is doing now, as He reveals truth to us. He cures with revelation, by revealing to us what is happening—what is truth.
Jesus responded to their accusation first by saying, a house divided will fall. One has to be of the devil or not, both don't agree. Jesus is not for Satan and Satan is not for Jesus. Therefore we have to choose —that is what He went on to say. He said either you are for Me or against Me. Thus if we choose Jesus we must be on guard, be the strong man— prepared for the enemy who wants to break in and occupy our temple. If we are in the dark as those people that day were, then we are going to be overtaken by the strong man. If Satan knows more than we do we will be overtaken by him, when we don't have Jesus, the devil is stronger than we are.
But if we are full of revelation knowledge, full of the wisdom of Jesus, full of Jesus—we will be on guard waiting and watching like Peter said. Peter said, be sober and vigilant that the enemy is roaming about like a roaring lion looking for someone to devour (! Peter 5:8). If we are ignorant of his wiles he can devour us, if we are not, if we are prepared, he has no place in our lives. We won't allow him to live in our minds if we know the truth.
Those who had the unclean spirits were ignorant of the enemy. Jesus came to show us the truth and gave us power and authority over the enemy so we could tie him up. Jesus said whatever you bind on their earth is bound in heaven, whatever you loose is loosed (Matthew 18:18). But if we don't know that we will live harassed by the devil, instead of in control of him.
With no revelation knowledge we will live as the people without God live —in ignorance of the truth. In ignorance of the truth, letting Satan control us by letting him occupy our thinking.
When you are born again and filled with the Spirit then you will be giving permission to Jesus to occupy your being. But if you don't fill up on the things of God; if you don't let the things of God occupy your thinking, if you don't apply His kingdom ways and let Him change your life —then you will be overtaken by the enemy. If you let the enemy occupy your mind you have let him take over your life.
Jesus said if you clean your house of him, but you leave your (mind) house vacant, if you don't stay filled of the Spirit of God, full of the Word, then he will return and overtake you. Then your condition will be worse than before.
But —if we are prepared as we should be, if we are that strongman —on Jesus’ side and prepared, fully suited in our armor, Jesus in us, then the devil won't be able to move us.
Don't be divided, choose Jesus and then occupy your space in the Kingdom of God.