chamber - Baruch read from the window or balcony of the chamber looking into the court where the people were assembled. However, some of the chambers were large enough to contain a considerable number (Neh 13:5).
Gemariah - distinct from the Gemariah, son of Hilkiah, in Jer 29:3.
Shaphan - the same person as in 2Ki 22:3.
scribe - secretary of state, or he who presided over the public records.
higher court - that of the priests, the court of the people being lower (2Ch 4:9).