David commands his men to deal gently with Absalom, which is reiterated by the soldier who refuses to harm Absalom despite Joab's orders, highlighting David's love for his son.
Joab kills Absalom, an act of violence that David later remembers when instructing Solomon about Joab's past actions, indicating Joab's pattern of ruthless behavior.
David's lament over Absalom's death reflects the deep sorrow and love of a father, similar to the father's compassion in the parable of the Prodigal Son.