Abner, a key military leader, is deeply offended by Ish-Bosheth's accusation. His loyalty to Saul's house has been unwavering, and he has not betrayed Ish-Bosheth to David, despite the ongoing conflict between the two factions. The accusation involves a woman, which in the cultural context could imply a breach of honor or loyalty, something Abner takes very seriously. His rhetorical question, "Am I a dog's head—on Judah's side?" reflects his indignation and the insult he feels. Dogs were often seen as unclean animals, and to be called one is a deep insult.
This incident reveals the fragile nature of political alliances and the personal pride that can influence decisions. Abner's anger is not just about the accusation but also about the lack of trust and respect shown to him. It highlights the importance of communication and understanding in maintaining relationships, especially in leadership. The passage serves as a reminder of the complexities of human interactions and the need for wisdom and discernment in resolving conflicts.