C. F. Keil and Franz Delitzsch on Nehemiah 11:24

Neh 11:24

Finally, the official is named who had to transact with the king the affairs of the people, i.e., of the whole Jewish community in Judah and Jerusalem. Pethahiah, a Jew of the descendants of Zerah, was at the king’s hand in all matters concerning the people. המּלך ליד can scarcely be understood of a royal commissioner at Jerusalem, but certainly designates an official transacting the affairs of the Jewish community at the hand of the king, at his court.The inhabitants of the towns of Judah and Benjamin. - The heads who, with their houses, inhabited country districts are here no longer enumerated, but only the towns, with their adjacent neighbourhoods, which were inhabited by Jews and Benjamites; and even these are but summarily mentioned.