To Olympias
3 Think not however that it is an excuse to justify you in desiring death, that Job desired it, not being able to bear his sufferings. For consider the time when he desired it, and the disposition of his circumstances— the law was not given, the prophets had not appeared, grace had not been shed forth as it was afterwards, nor had he the advantage of any other kind of philosophy. For as a proof that more is demanded from us than from those who lived then, and that harder tasks are assigned to us, listen to Christ, when He says “Unless your righteousness exceeds the righteousness of the Scribes and Pharisees you shall in no case enter into the kingdom of Heaven.” Do not think therefore that to pray for death now is exempt from blame, but hearken to the voice of St. Paul when he says “To depart and to be with Christ is far better, but to abide in the flesh is more necessary for your sake.” For in proportion as the strain of the affliction is increased are the garlands of victory multiplied; in proportion as the gold is heated does it become purified, the longer the merchant makes his voyage on the sea, the larger is the freight which he collects. Do not then think that the labour now allotted to you is a slight one, but rather that it is higher than all which you have undergone, I mean that which consists in infirmity of body. For in the case of Lazarus (and although I may have often said this to you, it nowise hinders me from saying it now) this bodily infirmity availed for his salvation; and he departed to the bosom of the man who possessed a dwelling which he shared with all who passed by, and was continually shifting his home on account of God's command, and sacrificed his own son, his only begotten, who had been given him in extreme old age; although Lazarus had done none of these things yet he obtained this blessing inasmuch as he cheerfully endured poverty, and infirmity, and friendlessness. For this is so great a good to those who bear anything bravely that it releases any one who may have committed the greatest sins from the heaviest burden of them; or if any one is an upright and just man it becomes an additional ground of the greatest confidence. For it is a bright wreath of victory for the just, shining far above the brightness of the sun, and it is the greatest means of purification for those who have sinned. On this account Paul delivers the man who had made the incestuous marriage to “destruction of the flesh,” purifying him by this means. For as a proof that what was done did purify even from so great a stain hear his words “that his spirit may be saved in the day of the Lord.” And when he was accusing others of another very awful sin, that of partaking unworthily of the holy table and those secret mysteries, and had said that such a person will be “guilty of the body and blood of the Lord,” observe how he says that they also are purified from that grievous stain— “therefore are many weak and sickly among you.” And then by way of proving that they will not be confined to this condition of punishment, but that some profit will be derived from it, namely release from the penalties to which the sin is liable, he added: “for if we would judge ourselves, we should not be judged. But now when we are judged, we are chastened of the Lord, that we should not be condemned with the world.” Moreover that they who have lived very righteously derive much benefit from such chastisement is plain from the case of Job, who was more illustrious after it than before, and from the case of Timothy, who although he was such a good man, and entrusted with such an important ministry, and made the circuit of the world with Paul passed not two or three days, nor ten or twenty, or a hundred, but many in succession in ill health, his body being very seriously enfeebled. Paul shows this where he said “Use a little wine for your stomach's sake, and your frequent infirmities.” And he who raised the dead did not cure this man's infirmity, but left him in the furnace of his sickness so that he might therefrom contract a very great abundance of confidence. For the lessons which Paul himself had enjoyed from his Master, and the training which he had received from Him, he imparted to his disciple. For although he was not subjected to bodily infirmity, yet he was buffeted by trials not less severe, which inflicted much physical pain. “For there was given unto me” he says “a thorn in the flesh, a messenger of Satan to buffet me” meaning by this the blows, the bonds, the chains, the imprisonments, the being dragged about, and maltreated, and tortured by the scourges of public executioners. Wherefore also being unable to bear the pain occasioned to the body by these things “for this I besought the Lord thrice (thrice here meaning many times) that I might be delivered from this thorn.” And then when he did not obtain his petition, having learned the benefit of the trial, he held his peace, and rejoiced at the things which happened unto him.
Therefore even if you remain at home, and are set fast in bed, do not consider your life an idle one; for you undergo more severe pains than those who are dragged, and maltreated, and tortured by executioners, inasmuch as in this excessive infirmity of yours you have a perpetual executioner residing with you.
Source: Four Letters to Olympias (New Advent)