2 Samuel 2:17~23
¹⁷The battle that day was very fierce, and Abner and the men of Israel were defeated by David's men. ¹⁸The three sons of Zeruiah were there:Joab, Abishai and Asahel. Now Asahel was as fleet-footed as a wild gazelle. ¹⁹He chased Abner, turning neither to the right nor to the left as he pursued him. ²⁰Abner looked behind him and asked, "Is that you, Asahel?" "It is," he answered. ²¹Then Abner said to him, "Turn aside to the right or to the left; take on one of the young men and strip him of his weapons." But Asahel would not stop chasing him. ²²Again Abner warned Asahel, "Stop chasing me! Why should I strike you down? How could I look your brother Joab in the face?" ²³But Asahel refused to giveup the pursuit; so Abner thrust the butt of hisspear into Asahel's stomach, and the spear cameout through his back. He fell there and died onthe spot. And every man stopped when he came tothe place where Asahel had fallen and died.

2 Samuel 3:20~30
²⁰When Abner, who had twenty men with him, came to David at Hebron, David prepared a feast for him and his men. ²¹Then Abner said to David,"Let me go at once and assemble all Israel for mylord the king, so that they may make a compactwith you, and that you may rule over all that yourheart desires." So David sent Abner away, and hewent in peace. ²²Just then David's men and Joab returned from a raid and brought with them a great deal of plunder. But Abner was no longer with David in Hebron, because David had sent him away, and he had gone in peace. ²³When Joab and all the soldiers with him arrived, he was told that Abner son of Ner had come to the king and that the king had sent him away and that he had gone in peace. ²⁴So Joab went to the king and said, "What have you done? Look, Abner came to you. Why did you let him go? Now he is gone! ²⁵You know Abner son of Ner; he came to deceive you and observe your movements and find out everything you are doing." ²⁶Joab then left David and sent messengers after Abner, and they brought him back from the well of Sirah. But David did not know it. ²⁷Now when Abner returned to Hebron, Joab took him aside into the gateway, as though to speak with him privately. And there, to avenge the blood of his brother Asahel, Joab stabbed him in the stomach, and he died. ²⁸Later, when David heard about this, he said, "I and my kingdom are forever innocent before the LORD concerning the blood of Abner son of Ner. ²⁹May his blood fall upon the head of Joab and upon all his father's house! May Joab's house never be without someone who has a running sore or leprosy or who leans on a crutch or who falls by the sword or who lacks food." ³⁰(Joab and his brother Abishai murdered Abner because he had killed their brother Asahel in the battle at Gibeon.)