1 Samuel 26:15-17

Wherefore hast thou not kept, &c. Observed better military discipline for the preservation of the king's person? There came one of the people Into the king's camp, and had a fair opportunity to destroy him. Because ye have not kept your master Guarded him better from any danger. It is probable they despised David's small forces, and, therefore, were so negligent. It is my voice, my lord, O king He still acknowledges Saul's authority, and the allegiance he owed him, though he had done him so many injuries.