Matthew Henry on 2 Samuel 20:23–end
Here is an account of the state of David's court after his restoration. Joab retained the office of general, being too great to be displaced. Benaiah, as before, was captain of the guards. Here is one new office erected, which we had not (Sa2 8:16-18), that of treasurer, or one over the tribute, for it was not till towards the latter end of his time that David began to raise taxes. Adoram was long in this office, but it cost him his life at last, Kg1 12:18.
Jamieson-Fausset-Brown on 2 Samuel 20:23
DAVID'S GREAT OFFICERS. (Sa2 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.
Next: 2 Samuel Chapter 21
Adam Clarke on 2 Samuel 20:25
Shevah was scribe - The king's secretary.
John Gill on 2 Samuel 20:25
And Sheva was scribe,.... Either the same with Benaiah, or he was dead or removed, and Sheva was put in his place, see 2 Samuel 8:17,
and Zadok and Abiathar were the priests; as before; See Gill on 2 Samuel 8:17.
Keil & Delitzsch on 2 Samuel 20:23–end
David's Ministers of State. - The second section of the history of David's reign closes, like the first (Sa2 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 Sa2 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 Sa2 8:18), in the plac…