Geshem
An Arab, one of the three chief opponents of Nehemiah's rebuilding of Jerusalem alongside Sanballat and Tobiah. He joined the mockery at the start, took part in the repeated invitations to meet in the plain of Ono, and is named in the open letter alleging that Nehemiah intended to make himself king.
What we know — and how we know it
Where in scripture
NehemiahBut when Sanballat the Horonite, Tobiah the Ammontite servant, and Geshem the Arabian, heard it, they ridiculed us, and despised us, and said, “What is this thing that you are doing? Will you rebel against the king?”
Nehemiah 2:19
Now when it was reported to Sanballat, Tobiah, and to Geshem the Arabian, and to the rest of our enemies, that I had built the wall, and that there was no breach left in it (though even to that time I had not set up the doors in the gates)
Nehemiah 6:1 — Plots against Nehemiah
Sanballat and Geshem sent to me, saying, “Come, let us meet together in the villages in the plain of Ono.” But they intended to harm me.
Nehemiah 6:2
in which was written, “It is reported among the nations, and Gashmu says it, that you and the Jews intend to rebel. Because of that, you are building the wall. You would be their king, according to these words.
Nehemiah 6:6
Scripture quotations are from the World English Bible, a public-domain translation.