St. John Chrysostom: However, if the Devil does not dare to enter into the house . . .
“Moreover, if the Devil does not dare to enter into the house where the Gospel lies, much less will he ever seize upon the soul which contains such thoughts as these, and no evil spirit will approach it, nor will the nature of sin come near. Well, then, sanctify your soul, sanctify your body by having these thoughts always in your heart and on your tongue. For if foul language is defiling and evokes evil spirits, it is evident that spiritual reading sanctifies the reader and attracts the grace of the Spirit.”
+ St. John Chrysostom, Homily 32, Homilies on the Gospel of John
