Bowling is a game you play by rolling a ball to knock down what are called “pins”. Some people are very good bowlers because they are able to knock the most pins down again and again. It is never a good thing to only knock down some of the pins, and no one who was a good bowler would purposely miss any pins and intentionally leave them standing. It would be foolish for a bowler to say for some reason that they liked one or more of the pins and avoid knocking them down.
Just like a successful bowler has the goal of knocking down all the pins, Christians should have the goal of knocking down every thought that is out of place and that tries to gain superiority over the knowledge of God, which we find in the Word of God. Any idea that does not line up with God’s Word has to be dealt with and not allowed to remain as a part of our thinking. The first thing in this process is to know what the Bible says, to know what the right kind of thought is and what is not.
When you are bowling, once you knock down all the pins down, they get set up again. In the same way, the devil will try to fill our minds with the same wrong thoughts repeatedly. How do we bring our thoughts "into captivity"? First of all, we do not just let any thought float through our head unchallenged, we check every thought against what we find in the Bible. Secondly, we fill our mind with the truth of God's Word and make that a continual process for the rest of our life. Don't let any thought into your mind, don't let any thought exalt itself against the knowledge of God.