The tragic fall of King Saul in battle against the Philistines claimed not only his life and the lives of his three sons, but also the lives of those in his immediate circle. The idea that his entire household perished alongside him might seem confusing, as it is widely known that other members of his family survived the war.
To resolve this apparent contradiction, the focus shifts away from his biological relatives. Instead, the mention of his household refers specifically to the loyal men and devoted servants who fought directly by his side on the battlefield. This understanding aligns perfectly with parallel accounts in the Book of Samuel, which clarify that the casualties included all the men who went into combat with the king, while the rest of his family survived the ordeal [מלבי״ם].