They told David, saying, Behold, the Philistines are fighting against Keilah, and are robbing the threshing floors.
Keilah was located near the Philistine border.  "It was a fortified city allotted to Judah  (Joshua 15:44).  It was mentioned in the Tel el-Amarna  letters as Qilti and identified with Khirbet Qila, located eight miles northwest of Hebron overlooking the Elah Valley road to Hebron.  In the times of Nehemiah, the city was reoccupied by the Israelites returning from the captivity in Babylon  (Nehemiah 3:17-18)."[1]