2 Samuel 2:18

2:18 The three sons of Zeruiah were there – Joab, Abishai, and Asahel. (Now Asahel was as quick on his feet as one of the gazelles in the field.)

2 Samuel 3:27

3:27 When Abner returned to Hebron, Joab took him aside at the gate as if to speak privately with him. Joab then stabbed him in the abdomen and killed him, avenging the shed blood of his brother Asahel.

2 Samuel 8:16

David’s Cabinet

8:16 Joab son of Zeruiah was general in command of the army; Jehoshaphat son of Ahilud was secretary;

2 Samuel 20:23

20:23 Now Joab was the general in command of all the army of Israel. Benaiah the son of Jehoida was over the Kerethites and the Perethites.