C. F. Keil and Franz Delitzsch on 1 Chronicles 9:23-24

1Ch 9:23-24

They (those ordained by David) and their sons (descendants) were at the doors of the house of Jahve-of the tent-house (האהל בּית is added to בּית־יהוה, in order that the latter might not be confined to Solomon’s temple); for the watch (משׁמרות of persons, as in Neh 12:9; Neh 4:3, Neh 4:16), according to the four winds (quarters) were they, i.e., the doorkeepers stood so, in accordance with the arrangement made by David; cf. 1Ch 26:14.