Then the five kings of the Amorites—the kings of Jerusalem, Hebron, Jarmuth, Lachish and Eglon—joined forces. They moved up with all their troops and took up positions against Gibeon and attacked it.
Jarmuth was an Amorite city in Canaan at the time of the Israelite settlement recorded in the Hebrew Bible.
According to Joshua 10:3-5, its king, Piram, was one of five kings who formed an alliance to attack Gibeon in response to Gibeon's tolerance of the Israelite settlement under Joshua.