Ps 90:10

“And now that I am writing to you I beseech you. Do not regard the bodily affliction that has befallen you as due to sin. When the apostles speculated concerning the man that was born blind from the womb and asked our Lord and Savior: "Who did sin, this man or his parents, that he was born blind?" they were told "Neither has this man sinned nor his parents, but that the works of God should be made manifest in him." Do we not see numbers of pagans, Jews, heretics and people of various opinions rolling in the mire of lust, bathed in blood, surpassing wolves in ferocity and hawks in rapacity, and "for all this the plague does not come near their dwellings"? They are not struck as other people, and accordingly they grow insolent against God and lift up their faces even to heaven. We know on the other hand that holy people are afflicted with sicknesses, miseries and want, and perhaps they are tempted to say, "Truly I have cleansed my heart in vain and washed my hands in innocence." Yet immediately they go on to reprove themselves, "If I say, I will speak thus; behold, I should offend against the generation of your children." If you suppose that your blindness is caused by sin and that a disease [such as blindness] that physicians are often able to cure is an evidence of God's anger, you will think Isaac a sinner because he was so wholly sightless that he was deceived into blessing one whom he did not mean to bless. You will charge Jacob with sin, whose vision became so dim that he could not see Ephraim and Manasseh, although with the inner eye and the prophetic spirit he could foresee the distant future and the Christ that was to come of his royal line. Were any of the kings holier than Josiah? Yet he was slain by the sword of the Egyptians. Were there ever loftier saints than Peter and Paul? Yet their blood stained the blade of Nero. And to say no more of people, did not the Son of God endure the shame of the cross? And yet you fancy those blessed who enjoy in this world happiness and pleasure? God's hottest anger against sinners is when he shows no anger. Therefore in Ezekiel he says to Jerusalem, "My jealousy will depart from you, and I will be quiet and will be no more angry." For "whom the Lord loves he chastens, and scourges every son whom he receives." The father does not instruct his son unless he loves him. The master does not correct his disciple unless he sees in him signs of promise. When once the doctor gives up caring for the patient, it is a sign that he despairs. You should answer thus: "as Lazarus in his lifetime received evil things so will I now gladly suffer torments that future glory may be laid up for me." For "affliction shall not rise up the second time." If Job, a man holy and spotless and righteous in his generation, suffered terrible afflictions, his own book explains the reason why.”