Just on ‘wrestling’ with principalities:
Eph 6:10 Finally, my brethren, be strong in the Lord, and in the power of his might.
Eph 6:11 Put on the whole armor of God, that you may be able to stand against the wiles of the devil.
Eph 6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in heavenly places.
Eph 6:13 Therefore take unto you the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand.
The goal here is to stand. This means that the wrestling is bcos THEY, the powers and principalities, the rulers of darkness, come against us. We are not coming against principalities, looking for a fight with them, and then conquering them, which would mean stopping their activities. If you’ve fought a principality and ‘won’, then they could no longer do anything, right?
We are resisting them and having the victory in Christ when we don’t obey their suggestions. Simply don’t obey their word, or their suggestions, and submit yourself to God, and the devil will flee, then you’ve effectively wrestled with them and gotten the victory, by faith.
When we cast a demon out of a person then they go and enter someone else, someone who has opened the door to them thru sin. We’ve not ‘defeated’ the demon or rendered it powerless. Yet a great victory has been enforced in the life of that person.
If one thinks they can drive principalities out of a city, then, if they did go, they would just go to another city and the people there would curse you for that!