Gihon: The exact location is unknown, but some think it could be the Nile River or the Jordan River (as in the Greek version of Jeremiah 2:18; Josephus, Antiquities 1.1.3). Or according to Jewish tradition, it could be a river that once flowed through the Kidron Valley (1 Kings 1:33; 2 Chronicles 33:14).
Although Cush often refers to ancient Ethiopia, the immediate setting here seems to be a region in Mesopotamia connected with Babylon (see 10:8). Cush may refer to the land of the Kassites, a people who ruled in Babylonia.