We demolish arguments and every pretension that sets itself up against the knowledge of God, and take captive every thought to make it obedient to Christ.
The thing that struck me most about this is the comprehensiveness that is claimed for the gospel.
There is no compromise between the arguments against the knowledge of God and the knowledge of God. It is not enough to have some thoughts that are obedient to Christ. They all need to be made obedient.
The first place this happens is in our own hearts. We cannot let the arguments and pretensions agains the knowledge of God grow. We cannot feed them. We need to defend against them. We need to affirm what is true, and deny what is false.
When a thought comes that is seeking to lead us away from Christ, we need to reject it. This has at least two parts. One is consciously analyzing thoughts to see whether they lead or toward or away from Christ.
The other part is growing in our seeking of Christ directly. Seeking him in his word and being built up by our brothers and sisters, and growing in obedience, we come to know him more, and we are better able to discern the first part.