We can stand beside them as citizens of this nation, vote for officials who will make better decisions, pass laws that will be helpful, urge that Supreme Court Justices be appointed who have a sense of morality, and so forth. But these are not at the heart of what it means to serve Christ in the battle for his truth. Our first and deepest goal is to tear down strongholds, destroying places where evil is entrenched. Paul makes the point that evil is entrenched in the thinking of people. It is pretensions, the ideas that oppose knowledge of God, that are the ultimate strongholds.
People behave the way they do because they have strongholds in their belief systems.
What makes them willing to give in to the attraction to pornography is misguided beliefs about sexuality, righteousness, and who they are. It's the stronghold of misunderstanding a righteous God, his claim upon people's lives, and the idea that our sexuality should be joyful and honorable. The strongholds inside make people vulnerable to the external behavior. Our business as the Christian church is to attack the strongholds, not just the periphery. It's to march past the distant border and go all the way to the capital city, to take on the ideas on the inside and tear them down by application of spiritual weapons.