Ezra (the scholar) stood beside him when he taught the Bible.
Neh 8:4And Ezra the scribe stood on a wooden platform that had been built for the purpose. And beside him stood Mattithiah, Shema, Anaiah, Uriah, Hilkiah, and Maaseiah on his right hand; and Pedaiah, Mishael, Malchijah, Hashum, Hasbaddanah, Zechariah, and Meshullam on his left hand.