2 Corinthians 10:3-6

For though we walk in the flesh, we do not war according to the flesh (for the weapons of our warfare are not of the flesh, but mighty before God to the casting down of strong holds); casting down imaginations, and every high thing that is exalted against the knowledge of God, and bringing every thought into captivity to the obedience of Christ; and being in readiness to avenge all disobedience, when your obedience shall be fulfilled.