Today I accept that I am fighting a spiritual war. I will resist, with spiritual weapons, “any human act or attitude that forms an obstacle to the emancipating knowledge of God contained in the Gospel of Christ and that keeps people (me) in bondage to sin.”  
Expositors Bible Commentary, Abridged  Edition on 2 Corinthians 10:5

The truth is that, although of course we lead normal human lives, the battle we are fighting is on the spiritual level. The very weapons we use are not those of human warfare but powerful in God’s warfare for the destruction of the enemy’s strongholds. Our battle is to bring down every deceptive fantasy and every imposing defense that men erect against the true knowledge of God.
J.B. Phillips New Testament

We are warned about arguments. These are thoughts, ideas, speculations, reasonings, philosophies, and false religions that are the ideological forts in which men barricade themselves against God and the gospel. Next, we are told to take every thought into captivity. This emphasizes the total destruction of the fortresses of human and satanic wisdom and the rescuing of those inside from the damning lies that had enslaved them. 
NKJV MacArthur Study Bible 2nd Ed.

Other fortresses of lies include imaginations, proud things, arrogance, lofty opinions, pretensions, and deceptive fantasies.

2 Corinthians 10:5
We are demolishing arguments and ideas, every high-and-mighty philosophy that pits itself against the knowledge of the one true God. We are taking prisoners of every thought, every emotion, and subduing them into obedience to the Anointed One.
The Voice

Total I will go to God’s altar and will use all spiritual weapons to destroy any attempt to deny my access to it.