2 Corinthians 10:3-7

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 divinely powerful for the destruction of fortresses. We are destroying speculations and every lofty thing raised up against the knowledge of God, and we are taking every thought captive to the obedience of Christ, and we are ready to punish all disobedience, whenever your obedience is complete. You are looking at things as they are outwardly. If anyone is confident in himself that he is Christ’s, let him consider this again within himself, that just as he is Christ’s, so also are we.