Paul is not talking about demons. He is talking about arguments, imaginations, rationalities, thoughts, and knowledge. These are the strongholds that keep us from winning the war and from being the people God wants us to be. We are dealing with the same thing that we dealt with back in the Garden...
I give myself continually to prayer and to the ministry of God, a workman who need not be ashamed, rightly dividing the Word of truth. I am not conformed to this world, but transformed by the renewing of my mind, to prove what is that good, acceptable, and perfect will of God. I am risen with Chr...