John Wesley on 2 Samuel 14:13

Wherefore then - If thou shouldst not permit the avengers of blood to molest me, or to destroy my son, who are but two persons; how unreasonable is it that thou shouldest proceed in thy endeavours to avenge Amnon's blood upon Absalom, whose death would be grievous to the whole commonwealth of Israel, all whose eyes are upon him as the heir of the crown, and a wise, and valiant, and amiable person, unhappy only in this one act of killing Amnon, which was done upon an high provocation, and whereof thou thyself didst give the occasion by permitting Amnon to go unpunished? Faulty - By thy word, and promise, and oath given to me for my son, thou condemnest thyself for not allowing the same equity towards thy own son. It is true, Absalom's case was widely different from that which she had supposed. But David was too well affected to him, to remark that difference, and was more desirous than she could be, to apply that favourable judgment to his own son, which he had given concerning hers.