Charles Ellicott Commentary 2 Samuel 20:7

"And there went out after him Joab`s men, and the Cherethites and the Pelethites, and all the mighty men; and they went out of Jerusalem, to pursue after Sheba the son of Bichri." — 2 Samuel 20:7 (ASV)

Joab’s men. —The body of men who were usually under Joab’s immediate command, and who would readily follow his brother, whom they had been accustomed to see associated with him. On “the Che-rethites and the Pelethites,” see Note on 2 Samuel 8:18. “The mighty men” (see 2 Samuel 23:8) appear to have been a special body of heroes, probably made up chiefly of those who had been with David in his life as an outlaw.