So Joab was over all the army of Israel: and Banaias the son of Joiada was over the Cerethites and Phelethites,

And Joab is over all the host of Israel, and Benaiah son of Jehoiada is over the Cherethite, and over the Pelethite,

Now Joab was over all the army; and Benaiah, the son of Jehoiada, was at the head of the Cherethites and the Pelethites;

Thus Joab was over the entire army of Israel. And Benaiah, the son of Jehoiada, was over the Cerethites and Phelethites.

Now Joab - This is by no means an unmeaning repetition. Joab had been dismissed to make room for Amasa, and was now, as the result of his successful expedition against Sheba, and the death of Amasa, reinstated in his command. Moreover, this was a fresh beginning of David's reign, and therefore a statement of his chief officers is as proper as in 2-Samuel 8:16, when he had just established himself on the throne of Israel. Compare 1-Kings 4:2-6.

Joab was over all the host - He had murdered Amasa, and seized on the supreme command: and such was his power at present, and the service which he had rendered to the state by quelling the rebellion of Sheba, that David was obliged to continue him; and dared not to call him to account for his murders without endangering the safety of the state by a civil war.
Benaiah - over the Cherethites - Benaiah was over the archers and slingers.
See the notes on 2-Samuel 8:18.

Now Joab was over all the host of Israel,.... Established in the post in which he formerly was; either having been never displaced, which though David thought to do, he was not able to effect it, because of his power and influence with the people; or if he had displaced him, which by some things in this chapter seemed to be the case, yet Amasa being dead, and the rebellion crushed by Joab, which still made him more haughty, and increased his popularity, David saw it most advisable to replace him; and because mention is made of him, as established in his office as general over the whole army, an account is given of the rest of David's officers; and the rather, as it was a sort of beginning his reign anew, after quelling the above rebellions:
and Benaiah the son of Jehoiada was over the Cherethites, and over the Pelethites; was continued in his post, see 2-Samuel 8:18.

Here is the state of David's court, after his restoration. It is well when able men are appointed to discharge public duties; let all seek to perform those duties, as faithful servants to the Son of David.

DAVID'S GREAT OFFICERS. (2-Samuel 20:23-26)
Now Joab was over all the host of Israel--David, whatever his private wishes, found that he possessed not the power of removing Joab; so winking at the murder of Amasa, he re-established that officer in his former post of commander-in-chief. The enumeration of David's cabinet is here given to show that the government was re-established in its wonted course.

David's Ministers of State. - The second section of the history of David's reign closes, like the first (2-Samuel 8:16.), with a list of the leading ministers of state. The author evidently found the two lists in his sources, and included them both in his work, for the simple reason that they belonged to different periods, as the difference in the names of some of the officers clearly shows, and that they supplemented on another. The list before us belongs to a later period of David's reign than the one in 2-Samuel 8:16-18. In addition to the office-bearers mentioned in 2 Samuel 8, we find here Adoram over the tribute, and Ira the Kairite a confidential counsellor (cohen: see at 2-Samuel 8:18), in the place of the sons of David noticed in 2-Samuel 8:18. The others are the same in both lists. The Chethib הכרי is to be read הכּרי (cf. 2-Kings 11:4, 2-Kings 11:19), from כוּר, perfodit, and is synonymous with הכּרתי (see at 2-Samuel 8:18). Adoram is the same person as Adoniram, who is mentioned in 1-Kings 4:6 and 1-Kings 5:14 as overseer over the tributary service in the time of Solomon; as we may see from the fact, that the latter is also called Adoram in 1-Kings 12:18, and Hadoram in 2-Chronicles 10:18. Hadoram is apparently only a contracted form of the name, and not merely a copyist's mistake for Adoniram. But when we find that, according to the passage cited, the same man filled this office under three kings, we must bear in mind that he did not enter upon it till the close of David's reign, as he is not mentioned in 2-Samuel 8:16., and that his name only occurs in connection with Rehoboam's ascent of the throne; so that there is no ground for assuming that he filled the office for any length of time under that monarch. המּס does not mean vectigal, i.e., tribute or tributary service, but tributary labourers. The derivation of the word is uncertain, and has been disputed. The appointment of a special prefect over the tributary labourers can hardly have taken place before the closing years of David's reign, when the king organized the internal administration of the kingdom more firmly than before. On the tributary labourers, see at 1-Kings 5:13. Ira the Jairite is never mentioned again. There is no ground for altering Jairi (the Jairite) into Jithri (the Jithrite), as Thenius proposes, since the rendering given in the Syriac ("from Jathir") is merely an inference from 2-Samuel 23:38; and the assumption upon which this conclusion is founded, viz., that Ira, the hero mentioned in 2-Samuel 23:38, is the same person as Ira the royal cohen, is altogether unfounded.

Over all the host - The good success of this, and of the former expedition, under the conduct of Joab, had so fixed his interest in the army, and others of David's fastest friends, that the king could not without danger displace him.