Question: "How can demonic strongholds be overcome?"
Answer: Before demonic strongholds can be overcome, it must be understood exactly what demonic strongholds are. The word stronghold appears only once in the New Testament (2 Corinthians 10:4), and the Greek word translated “stronghold” means “a fortification such as a castle.” In this passage, the apostle Paul is instructing the church at Corinth on how to fight against and “destroy arguments and every lofty opinion raised against the knowledge of God” (v. 5). They do this, not by using the weapons of the world, but by “divine power.” Lofty arguments and opinions are the result of pride and evil and vain imaginations, the very strongholds in which demons reside. This, then, is the essence of demonic warfare—the power of God to overcome the strongholds of demons.
In Ephesians 6:10-18, Paul describes the resources that God makes available to His followers—the armor of God. Here we are told how, in an attitude of humility and dependence, we are to avail ourselves of God's resources. Note that we are to be strong “in the Lord” and “in the power of His might.” We do not take on demonic strongholds in our own strength. We protect ourselves with the first five pieces of defensive armor and wield the one offensive weapon—the sword of the Spirit which is the Word of God. In verses 12 and 13 of Ephesians 6, Paul continues, “For we do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this age, against spiritual hosts of wickedness in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand.”
One of the habits that every believer needs to develop is to focus on Ephesians 6:10-18 and commit himself to “get dressed” spiritually every day. It would go a long way to giving victory over the devil and his schemes. Here Paul states that, while we walk in the flesh (we are living and breathing in this human body), we do not war according to the flesh (we can’t fight spiritual battles with fleshly weapons). Instead, as we focus on the resources and weapons of spiritual strength, we can see God give us specific and real victory. No demonic stronghold can withstand Christians wearing the full armor of God, battling with the Word of God, and empowered by His Spirit.