WHAT CAN WE DO TO PREVENT IT?
A few thoughts:
1. 2 Timothy 2:24 And the Lord's servant must not be quarrelsome but kind to everyone, table to teach, patiently enduring evil, 25 correcting his opponents with gentleness. God may perhaps grant them repentance leading to a knowledge of the truth, 26 and they may come to their senses and escape from the snare of the devil, after being captured by him to do his will.
While this passage is talking specifically about leading those who are in the snare of the devil toward Christ...I think a larger principle applies, which is this: The way to battle the Devil, to free people from His clutches, is to patiently, yet boldly teach the sure truth. I can't discount those who have cast out Demons, or say that has no place, but I think the PRIMARY way God battles satan in our lives is through his word, taught, read, imbibed, and applied.
2. Isaiah 59:16:He saw that there was no man, and wondered that there was no one to intercede; then his own arm brought him salvation, and his righteousness upheld him. 17 He put on righteousness as a breastplate,
and a helmet of salvation on his head; he put on garments of vengeance for clothing, and wrapped himself in zeal as a cloak.
There are some striking similarities between this and the Eph. 6 Armour...and I believe this is a messianic prophesy...so...the more I consider the Eph. 6 armour...the more I am convinced that CHRIST IS THE ARMOR! Put on Christ!. He is the one who brings salvation, with his righteousness, his Word, bringing his peace... Simply saying to myself, "I'm going to suit up with this spiritual armor, and then battle satan myself" ...we can't do it! Jesus has already struck the deathblow, and will complete what he has started...
1 John 3:8 - Whoever makes a practice of sinning is of the devil, for the devil has been sinning from the beginning. The reason the Son of God appeared was to destroy the works of the devil.
Hebrews 12:1 - Therefore, since we are surrounded by so great a cloud of witnesses, let us also lay aside every weight, and sin which clings so closely, and let us run with endurance the race that is set before us, 2 looking to Jesus, the founder and perfecter of our faith, who for the joy that was set before him endured the cross, despising the shame, and is seated at the right hand of the throne of God. 3 Consider him who endured from sinners such hostility against himself, so that you may not grow weary or fainthearted.
Consider Jesus, so that you may not grow weary or fainthearted...I Truly believe this will do more for those under spiritual oppression or attack than trying to learn tricks of casting out demons or trying root out the exact cause of each and every oppression...You can say, "I don't even understand why this is happening, or what caused it...but I know whom I have believed, and am pursuaded that he has committed to keep that which I have entrusted unto him until that day."