Second Corinthians 10:4-5 says, “For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strongholds; casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ.” These verses contain three powerful instructions for winning spiritual warfare: pulling down, casting down, bringing into captivity.
God knows that we are in a battle, and His plan is for us to win! A stronghold is a fortress created in your spirit that cannot be penetrated by physical weapons. God wants those fortresses brought down so that His Spirit can work in power. Strongholds begin with thoughts and imaginations. The progression described is that our thoughts left unchecked grow into imaginations which turn into strongholds in our lives.
Rather than allowing our spirits to be ruled by what we see and think, we should be ruled by the Word of God. When we speak the Word, we are thinking the Word. If you think thoughts that are from God, they create strong fortresses as they renew our mind and build our spirit. Romans 12:2 says, “And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.” We renew our minds with constant input from the Scriptures.
Your brain weighs approximately three pounds and has more than 12,000,000,000 individual cells. There are well over one hundred trillion connections between your brain cells that allow you to think, reason, and function. Like a computer, the output of your brain is determined by what you program into it. Is your mind filled with the thinking of the world or with the thinking of God? A Christian who is walking in the power of the Holy Spirit and thinking with a renewed mind is a great danger to the kingdom of Satan.