Made by God, the youngest son of Zeruiah, David’s sister. He was celebrated for his swiftness of foot. When fighting against Ish-bosheth at Gibeon, in the army of his brother Joab, he was put to death by Abner, whom he pursued from the field of battle (2 Sam. 2:18, 19). He is mentioned among David’s thirty mighty men (2 Sam. 23:24; 1 Chr. 11:26). Others of the same name are mentioned (2 Chr. 17:8; 31:13; Ezra 10:15).
Asahel
“As light of foot as a wild roe,” Asahel was one of Zeruiah’s three sons, brother to Joab and Abishai (2 Samuel 2:18). In a battle between David’s men and Abner’s, he ran after Abner and “turned not to the right hand nor to the left.” Abner warned him twice to turn aside, but he “refused to turn aside,” and Abner struck him with the back end of his spear. He died on the spot, and those who came to the place stood still. Joab later killed Abner at Hebron (2 Samuel 3:27). Asahel is also listed among David’s thirty.
13 verses
2 Samuel
And there were three sons of Zeruiah there, Joab, and Abishai, and Asahel: and Asahel was as light of foot as a wild roe.
And Asahel pursued after Abner; and in going he turned not to the right hand nor to the left from following Abner.
Then Abner looked behind him, and said, Art thou Asahel? And he answered, I am.
And Abner said to him, Turn thee aside to thy right hand or to thy left, and lay thee hold on one of the young men, and take thee his armour. But Asahel would not turn aside from following of him.
And Abner said again to Asahel, Turn thee aside from following me: wherefore should I smite thee to the ground? how then should I hold up my face to Joab thy brother?
Howbeit he refused to turn aside: wherefore Abner with the hinder end of the spear smote him under the fifth rib, that the spear came out behind him; and he fell down there, and died in the same place: and it came to pass, that as many as came to the place where Asahel fell down and died stood still.
Joab also and Abishai pursued after Abner: and the sun went down when they were come to the hill of Ammah, that lieth before Giah by the way of the wilderness of Gibeon.
And they took up Asahel, and buried him in the sepulchre of his father, which was in Bethlehem. And Joab and his men went all night, and they came to Hebron at break of day.
And when Abner was returned to Hebron, Joab took him aside in the gate to speak with him quietly, and smote him there under the fifth rib, that he died, for the blood of Asahel his brother.
Asahel the brother of Joab was one of the thirty; Elhanan the son of Dodo of Bethlehem,
1 Chronicles
Whose sisters were Zeruiah, and Abigail. And the sons of Zeruiah; Abishai, and Joab, and Asahel, three.
Also the valiant men of the armies were, Asahel the brother of Joab, Elhanan the son of Dodo of Bethlehem,
Ezra
Only Jonathan the son of Asahel and Jahaziah the son of Tikvah were employed about this matter: and Meshullam and Shabbethai the Levite helped them.
From Easton's Bible Dictionary
Matthew George Easton, 1897