2 Corinthians 10:1-6

1 Now I Paul, myself, entreat you by the humility and gentleness of Christ; I who in your presence am lowly among you, but being absent am of good courage toward you.  2 Yes, I beg you that I may not, when present, show courage with the confidence with which I intend to be bold against some, who consider us to be walking according to the flesh.  3 For though we walk in the flesh, we don't wage war according to the flesh;  4 for the weapons of our warfare are not of the flesh, but mighty before God to the throwing down of strongholds,  5 throwing 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;  6 and being in readiness to avenge all disobedience, when your obedience will be made full.