Jehovah is his father. (1.) One of the three sons of Zeruiah,
David's sister, and "captain of the host" during the whole of
David's reign (2 Sam. 2:13; 10:7; 11:1; 1 Kings 11:15). His
father's name is nowhere mentioned, although his sepulchre at
Bethlehem is mentioned (2 Sam. 2:32). His two brothers were
Abishai and Asahel, the swift of foot, who was killed by Abner
(2 Sam. 2:13-32), whom Joab afterwards treacherously murdered
(3:22-27). He afterwards led the assault at the storming of the
fortress on Mount Zion, and for this service was raised to the
rank of "prince of the king's army" (2 Sam. 5:6-10; 1 Chr.
27:34). His chief military achievements were, (1) against the
allied forces of Syria and Ammon; (2) against Edom (1 Kings
11:15, 16); and (3) against the Ammonites (2 Sam. 10:7-19; 11:1,
11). His character is deeply stained by the part he willingly
took in the murder of Uriah (11:14-25). He acted apparently from
a sense of duty in putting Absalom to death (18:1-14). David was
unmindful of the many services Joab had rendered to him, and
afterwards gave the command of the army to Amasa, Joab's cousin
(2 Sam. 20:1-13; 19:13). When David was dying Joab espoused the
cause of Adonijah in preference to that of Solomon. He was
afterwards slain by Benaiah, by the command of Solomon, in
accordance with his father's injunction (2 Sam. 3:29; 20:5-13),
at the altar to which he had fled for refuge. Thus this hoary
conspirator died without one to lift up a voice in his favour.
He was buried in his own property in the "wilderness," probably
in the NE of Jerusalem (1 Kings 2:5, 28-34). Benaiah
succeeded him as commander-in-chief of the army.
(2.) 1 Chr. 4:14.
(3.) Ezra 2:6.
Bibliography Information Easton, Matthew George. M.A., D.D., "Biblical Meaning for 'joab' Eastons Bible Dictionary". bible-history.com - Eastons; 1897.