Powerful weaponry against the devil

My dearest friends, a pure life and fearless faith in God are powerful weapons against the demons.  Believe me, for I have experience with this.  Night-time devotions and the prayers, fasting and gentleness of those who live rightly, terrify satan.  He is afraid of these devoted ones because of their voluntary poverty, their lack of vanity, their humility, their compassion, their control over anger, and particularly because of their pure love for Christ.  That foulest serpent knows that it is at God's command that he lies beneath the footsteps of the just.