King David's lament for Abner is a poignant expression of grief and a call for justice. Abner was a prominent military leader, and his death was a significant loss. David's question, "Should Abner have died as the lawless die?" implies that Abner's death was unjust and undeserved. This reflects David's respect for Abner, despite their complicated history. Abner's death was not in battle but through treachery, which David condemns by comparing it to the death of a criminal.
David's lamentation is not just personal but also public, as he seeks to honor Abner's memory and ensure that his death is seen as a tragedy rather than a deserved fate. This moment in scripture highlights themes of justice, honor, and the complexity of human relationships. It serves as a reminder of the importance of recognizing the dignity of every individual and the need to mourn those who are lost unjustly. David's response also shows his commitment to justice and his ability to look beyond personal grievances to acknowledge the worth of others.