John Chrysostom on Mortification

How then are we to be freed from this pest? I f we can drink a potion that is able to kill the worm within us and the serpents. “And of what nature,” it will be asked, “may this potion be, that has such power?” The precious blood of Christ, if it be received with full assurance, (for this will have power to extinguish every disease); and together with this the divine Scriptures carefully heard, and almsgiving added to our hearing; for by means of all these things we shall be enabled to mortify the affections that mar our soul.

John Chrysostom, Homily IV on St. Matthew