1 Samuel 27:6-10

6That day Achish gave him Ziklag, and to this day it still belongs to the kings of Judah. 7And the time that David lived in Philistine territory amounted to a year and four months.

8Now David and his men went up and raided the Geshurites, the Girzites, and the Amalekites. (From ancient times these people had inhabited the land extending to Shur and Egypt.) 9Whenever David attacked a territory, he did not leave a man or woman alive, but he took the flocks and herds, the donkeys, camels, and clothing.

Then he would return to Achish, 10who would ask him, “What have you raided today?”

And David would reply, “The Negev of Judah,” or “The Negev of Jerahmeel,” or “The Negev of the Kenites.”