If im understanding you correctly your saying that because Jesus rid people of demons, is because demons do obey God and listen to his commands ?. on the same note, you would have to say that the demon must get permission from God first befor they possess a person or torment them, ? and now we go into a very dark realm with this point of view, because it goes against the verry words of Jesus. The light of Jesus would be what casts out the demon, is my first responce to you not so much the command but the light from Jesus is what made the demons flee. simply put if Jesus hadnt of been there to rid the people of Demons they would have been possessed a whole lot longer than they where.
John 1.5 states that the darkness (demons) has never been able to comprehend the light. which means never been able to understand the light. and never means never. Never also means from the beginning the darkness has never been able to understand the light. never being able to understand the light means never obeying the light.
In the beginning God seperated the darkness (demons) from the earth with his light, meaning it is the the light that cast out demons and not so much the command,
The light shines into the darkness but yet the darkness flees from the light. which means the darkness can not understand it. where there is no light the darkness can rule.
The light that shines in a believer is what can cast out a demon in a possesed person, not so much the command that comes from the believer. To stop our selfs from being taking over from a demon there is so much we have to do and know. If we dont know and do, the darkness will dwell there. Ignorance is bliss to a demon, ignorance certainly inst bliss to God, Because he came down as Jessus and trained a whole bunch of people on how to defeat demons, with actions we need to apply everyday. and what we can do to put up with there torment.
“God opposes the proud (who is proud = satan)
but shows favor to the humble.”[
a]
6 Humble yourselves, therefore, under God’s mighty hand, that he may lift you up in due time. 7 Cast all your anxiety on him because he cares for you.
8 Be alert and of sober mind. Your enemy the devil prowls around like a roaring lion looking for someone to devour. 9 Resist him, standing firm in the faith, because you know that the family of believers throughout the world is undergoing the same kind of sufferings. (
all christians being made to suffer by the enemy is not something Jesus likes but demons do it anyway).
10 And the God of all grace, who called you to his eternal glory in Christ, after you have suffered a little while, will himself restore you and make you strong, firm and steadfast. 11 To him be the power for ever and ever. Amen. (
Jesus telling us what we must do to defeat disobeying demons who do not act on Gods authority but yet still attack his children)