Geshem in Fausset's Bible Dictionary
An Arab who, with Sanballat of Horonaim, and Tobiah the
servant, the Ammonite, opposed Nehemiah in repairing
Jerusalem. (Nehemiah 2:19; Nehemiah 6:1, etc.) Frustrated in
this as well as in the plot against Nehemiah's life. It was
for the interest of the wandering marauders of the frontier of
Israel to prevent its restoration as a kingdom.
Read More about Geshem in Fausset's Bible Dictionary