There is sometimes such hardened unfeelingness in the soul that you do not perceive and do not feel your sins. You do not fear either death or the Judge, or the terrible judgment seat; you do not care a jot, as the saying is, about anything spiritual. O cunning, proud, evil flesh! It is not without reason that even the saints complain: ” I am overcome by the slumber of sloth, and the sleep of sin oppresses my heart. Avail thyself, my soul, of the time for repentance; shake off the heavy sleep of sloth, and hasten to watch.” Sometimes your soul is filled with such terrible slothfulness and hardened unfeelingness that you completely despair of being able to drive away this slothfulness and unfeelingness.

—St. John of Kronstadt, My Life in Christ