Charles Ellicott Commentary 1 Chronicles 26:29

"Of the Izharites, Chenaniah and his sons were for the outward business over Israel, for officers and judges." — 1 Chronicles 26:29 (ASV)

III. THE LEVITES CHARGED WITH BUSINESS EXTERNAL TO THE SANCTUARY (1 Chronicles 26:29–32).

Of the Izharites, Chenaniah and his sons. — As to the Izharites, Chenaniah, etc. Izhar was the second, as Hebron (1 Chronicles 26:30) was the third of the Kohathite stocks (1 Chronicles 23:12).

The outward business is defined as that of “officers” (shoterîm, scribes) and judges. Six thousand Levites were set apart for these duties (1 Chronicles 23:4). As Nehemiah 11:16 mentions “the outward business of the house of God,” the outward business spoken of here may have been in part connected with the Temple, and included such work as the collection of tithes and taxes.