The one 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 making a treaty with the Israelites led by Joshua, whom had recently massacred and killed all civilian inhabitants of the nearby cities of Jericho and Ai (where 12000 men and women civilians were murdered) after killing the army and spared no man, woman, child, elderly, or animal (Bible, Book of Joshua, Chapters 5-10). This Jarmuth is generally identified a modern site variously called Tel Jarmuth, Khirbet el-Yarmûk, or Tel Yarmut. This site is located on the south of Beit Shemesh, near Bayt Nattif, and is now a National Park. The Park spans over an area of 267 dunams (nearly 66 acres).
Another Jarmuth became a Levitical city given to the Gershonites within the territory of the Tribe of Issachar, according to Joshua 21:20. Jarmuth is not mentioned in the parallel list of Levitical cities in 1 Chronicles 6), but Ramoth is mentioned in its place (1 Chronicles 6:73). The site of the Issacharian Jarmuth is not yet known.
The Douai-Rheims version of the Bible has an alternative spelling, Jaramoth.