Peter also, though full of faith and devotion, yet because, not yet conscious of our common weakness, he had presumptuously said to the Lord, “I will lay down my life for Thy sake,” fell into the trial of his presumption before the cock crowed thrice. Although, indeed, that trial was a lesson for our salvation, that we might learn not to think little of the weakness of the flesh, lest through thus thinking little of it we should be tempted. If Peter was tempted, who can presume? who can maintain that he cannot be tempted? And without doubt for our sakes was Peter tempted, so that, the proving of the temptation did not take place in a stronger than he, but that in him we should learn how, resisting in temptations, although tried even by care for our lives, we might yet overcome the sting of the temptation with tears of patience.

But that same David, that the difference of his actions may not perhaps disturb those who cling to the words of Scripture; that same David, I say, who had not wept for the innocent infant, wept for the parricide when dead. For at the last, when he was wailing and mourning, he said, “O my son Absalom, my son Absalom! Who will grant me to die for thee!” But not only is Absalom the parricide wept over, Amnon is wept over; not only is the incestuous wept over, but is even avenged; the one by the scorn of the kingdom, the other by the exile of his brothers. The wicked is wept over, not the innocent. What is the cause? What is the reason? There is no little deliberation with the prudent and confirmation of results with the wise; for there is great consistency of prudence in so great a difference of actions, but the belief is one. He wept for those who were dead, but did not think that he ought to weep for the dead infant, for he thought that they were lost to him, but hoped that the latter would rise again.

But concerning the Resurrection more will be said later on; let us now return to our immediate subject. We have set forth that even holy men have without any consideration for their merits, suffered many and heavy things in this world, together with toil and misery. So David, entering into himself, says: “Remember; Lord, that we are dust; as for man, his days are but as grass;” and in another place: “Man is like to vanity, his days pass away as a shadow.” For what is more wretched than we, who are sent into this life as it were plundered and naked, with frail bodies, deceitful hearts, weak minds, anxious in respect of cares, slothful as to labour, prone to pleasures. — Two Books on the Decease of His Brother Saytrus – Book II, para. 27-29.