10:5 every lofty opinion. False wisdom and sophisticated arguments were some of the weapons used by the servants of Satan in their attack against Paul. The apostle had earlier stressed the difference between the wisdom of the world and the spiritual wisdom of the cross, and he warned the Corinthians against being deluded by the wisdom of the world (1 Cor. 1:18–2:16). Now Paul sees that his opponents have made such inroads with their false wisdom that he must oppose it again in the strongest terms and, at the same time, regain the loyalty and obedience of the Corinthians.
every thought captive. If every thought, then the whole person—our every idea, motive, desire, and decision—belongs to Christ.