It is natural for a sensible man always to seek the causes of his suffering first in himself, and for the foolish constantly to accuse others. The sensible man remembers all his sins from childhood onwards; he remembers them with the fear of God and with the expectation of suffering for his sins; and so, when suffering does fall on him, through either his friends or his enemies, from men or from evil spirits, either sooner or later, he at once knows the causes of his suffering, for he knows and remembers his sins. The foolish man, though, is forgetful, and forgets all his unrighteousness; so, when suffering falls on him, he writhes in torment and asks in amazement why he has a headache, why he should lose all his money or why his children should die. And, in his foolishness and fury, he will point his finger at every being on earth and in heaven, as at the one responsible for his suffering, before pointing the finger at himself – the one really responsible for it.
+ St. Nikolai Velimirovich, Homilies: Commentary on the Gospel Readings for Great Feasts and Sundays Throughout the Year, Volume 1, “23. The Third Sunday After Easter: The Gospel on the Miracle at Bethesda John 5:1-16”