Power over Demons

I long to see you a true knight, strong in your fight against the devil's every trick as long as we are on this battlefield, surrounded by enemies who are constantly fighting against us.  Like a true and courageous knight, a new plant, rise with fresh desire to go out against them.  Don't retreat, lest we be left dead or taken prisoner.  People are said to be in prison when they are somewhere they cannot leave as they please.  So if we were to turn aside the head of our will, abandon our holy resolve, and turn our efforts to carrying out the machinations of the devil, we would be in the very worst prison possible; we would have forfeited our freedom and become servants and slaves of sin.

If you say to me, "I am weak in the face of so many enemies," I answer you that of ourselves we are all so weak and frail that we fall at the slightest obstacle.  But divine providence is at work within our soul, strengthening us and relieving us of all weakness.  So be trustful, firmly believing that God always provides for souls who trust in him.  Then the devil is powerless, because the power of the most gracious holy cross deprives him of all his power over us.  But that same cross, by God's boundless goodness, makes us wholly strong, freed from all weakness and instability.  When we remember the holy cross we come to love virtue and hate vice.  Since we are the very rock in which that holy standard was implanted, we cannot say we have no access to it; it is firmly fixed in our very selves.  You know that neither nails nor cross nor rock could have held the God-Man on the cross had not his love for us held him there.  We are the ones for whom his blood was given as ransom.  When we remember that, honor is despicable, and mockery, torture, and insults are attractive.  

Saint Catherine of Siena

-Saint Catherine of Siena (1380), Doctor of the Church, was a Dominican, stigmatist, and papal counselor.