“The fact that a man slips into accidental sins demonstrates the weakness of his nature; for to our profit God has permitted our nature to be susceptible to sinful occurrences. For He has not thought it good to make the soul superior to these occurrences before the second regeneration. It is profitable for the soul to be susceptible to accidental sins because this pricks the conscience. To persist in them is, however, audacious and shameful.”

St. Isaac the Syrian