2 Corinthians 10:1-4

Now I, Paul, myself urge you by the meekness and gentleness of Christ—I who am meek when face to face with you, but bold toward you when absent! I ask that when I am present I need not be bold with the confidence with which I propose to be courageous against some, who regard us as if we walked according to the flesh. 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.