C. F. Keil and Franz Delitzsch on Nehemiah 8:4

Neh 8:4

Ezra stood upon a raised stage of wood which had been made for the purpose (לדּבר, for the matter). מגדּל, usually a tower, here a high scaffold, a pulpit. Beside him stood six persons, probably priests, on his right, and seven on his left hand. In 1 Esdras, seven are mentioned as standing on his left hand also, the name Azariah being inserted between Anaiah and Urijah. It is likely that this name has been omitted from the Hebrew text, since it is improbable that there was one person less on his right than on his left hand. “Perhaps Urijah is the father of the Meremoth of Neh 3:4, Neh 3:21; Maaseiah, the father of the Azariah of Neh 3:23; Pedaiah, the individual named Neh 3:25; the Azariah to be inserted, according to 1 Esdras, the same named Neh 3:23; a Meshullam occurs, Neh 3:4, Neh 3:6; and a Malchiah, Neh 3:11, Neh 3:14, Neh 3:31” (Bertheau).