This is just a thought, but do you think it's possible the idea was from Nehemiah? Nehemiah 8:1-8 here's v. 4.
Nehemiah 8:4 And Ezra the scribe stood upon a pulpit of wood, which they had made for the purpose; and beside him stood Mattithiah, and Shema, and Anaiah, and Urijah, and Hilkiah...