"For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places."
When 'flesh and blood' attacks us, recognize a spirit is attacking you through the individual. Does it matter if it's a professing Christian and they use scriptures in their heated pursuit? Or a Pastor or church leader of xx amount of years? No. Wasn't Peter even susceptible to aligning with a wrong spirit to receive strong rebuke from our Lord? (Mat 16:23, Mar 8:33)
Putting on the armor of God has to become a lifestyle.
As I teach my children, I have described to them how most Christians put on the armor, but then stand there instead of advancing up the hill and actually wielding their sword.
What then are we, as Kings and Priests unto the Lord to do? Act like it! We have to get in the mindset that we are not dealing with the person, but the spirit that is influencing the person... and now ensues the silent battle...
Privately begin to forbid (bind) it from operating in your presence (King/Priest, remember?). Thus begins the advance up the hill. What is IT, you say? Well, out of the mouth, the heart speaks… so pinpoint the spirit by it's tell-tale assault. Is it rooted in pride, jealousy, anger/rage, gossip…etc.? If you truly desire to grow in discerning spirits, pray and ask for more of this gift and then pay attention as the Holy Spirit will be nudging your spirit to walk in it.
Remember, we can bind, but casting is more suited for an agreed deliverance kind of situation, because if a person doesn't have Jesus in there…
"Then it says, 'I will return to my house from which I came'; and when it comes, it finds it unoccupied, swept, and put in order. Then it goes and takes along with it seven other spirits more wicked than itself, and they go in and live there; and the last state of that man becomes worse than the first. That is the way it will also be with this evil generation."
For our more 'sudden situation' example you more than likely do not have permission (especially when dealing with unbelievers), nor time to bring understanding to the situation. Therefore, bind what affects you. If it's a brother or sister in the Lord, you can give greater revelation to the situation later (Romans 12:18)… a person that is sorrowful regarding their behavior (as opposed to justifying it), is probably searching for deliverance from a cycle they can't break or just in repentance over a moment of weakness anyways! As you continue to live a Holy life others will be drawn to repentance. They will want to know "How do you do it?"… and the open door for forgiveness, cleansing, or deliverance-- you, might have the honor to lead them through.
Spiritual 'Manifestation' example: I've heard many a testimony where a rapist would be ready to strike and the believing woman would be either silently or verbally dealing with the spirit motivating the attack unto victory on her behalf.
What about that gossiper that makes you cringe? In 'life', we can't run and hide… especially when they might be in our own family. Use your authority in power by the name of Jesus, and scriptures that the Holy Spirit gives you--- all in the privacy of your own mind : )
Remember the authority you have in the name of Yeshua/Jesus!
Beware, this is not a 'method'.
Speaking it or reciting it through the halls of your mind mean nothing if you are not, at the same time, learning to completely trust and believe the scripture you are saying/thinking is indeed the truth. That, my friend, is the place we are heading.