2 Samuel 18:33

When King David had endured this affliction from his wicked and treacherous son, he had not only tolerated his uncontrolled passion but even lamented his death. He was not held ensnared by a carnal jealousy, since it was not the outrages inflicted on him, but rather the sins of his son that troubled him. For he had forbidden that his son be killed if he were conquered in order that opportunity for repentance might be reserved for him after he was vanquished. Since this was impossible, he did not grieve because of his bereavement in the death of his son but because he realized into what punishments such a wickedly adulterous and murderous soul was precipitated.

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.

Now what are we to do, seeing how many, with the help of the Lord, find the way of peace through your instrumentality? Surely we neither can nor ought to hold them back from this impulse toward unity, through fear that some, utterly hard and cruel to themselves, may destroy themselves by their own will, not ours. Indeed, we should pray that all who carry the standard of Christ against Christ and boast of the gospel against the gospel may forsake their wrong way and rejoice with us in the unity of Christ. But since God, by an inscrutable yet just disposition of his will, has predestined some of them to the ultimate penalty, undoubtedly it is better for some of them to perish in their own fires, while an incomparably greater number are rescued and won over from that deadly schism and separation, than that all should equally burn in the eternal fires of hell as a punishment for their accursed dissension. The church mourns their loss as holy David mourned the loss of his rebellious son about whose safety he had given orders with anxious love. He grieved over his son's death, with tearful utterance, although it was the penalty of a wicked impiety; but as his proud and wicked spirit departed to its own place, the people of God that had been divided by his tyranny recognized their king, and the completeness of their reunion consoled the grief of the father for the loss of his son.