“The weapons we fight with are not the weapons of the world. On the contrary, they have divine power to demolish strongholds. We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.” II Corinthians 10:4-5
The Greek word for stronghold, taken literally, means a fortress. It is used in the Bible also as a metaphor to represent thoughts that are based on human ideas that are guarded by pride, as opposed to thoughts that are based on God’s wisdom and guidance. A stronghold is a set way of thinking that an entire group of people can have in common. In 2 Corinthians 10:4-5, the Apostle Paul says that strongholds are a way of thinking that goes against the knowledge of God. You may not even be aware that the way you think about certain things has come from a source other than God.
According to the definition a stronghold is a fortress; a guarded fortress in the mind that blocks out truth. A person can get trapped inside the walls of this fortress and never know the truth. In 2 Corinthians 10:4-5, Paul says strongholds are set up against the knowledge of God, this would give the picture that a stronghold goes against what God says. Paul warned Christians of his day to be aware of strongholds and he compelled them that strongholds must identified and torn down.