When the devil sees someone living their life in mourning and weeping (of repentance), he cannot bear to stand close to them, because he is very afraid and is burned by the humility caused by the weeping, and he flees from there because he is proud and goes to those who imagine the high with pride, seeking to attain what is beyond his power. . .

With prayer and mourning, it is as if you are holding the greatest battle chariot (. . .) [Excerpt from the text on the back cover of the edition]