I Samuel 27:8-10

And David and his men went up and raided the Geshurites, the Girzites, and the Amalekites. For those nations were the inhabitants of the land from of old, as you go to Shur, even as far as the land of Egypt. Whenever David attacked the land, he left neither man nor woman alive, but took away the sheep, the oxen, the donkeys, the camels, and the apparel, and returned and came to Achish. Then Achish would say, “Where have you made a raid today?” And David would say, “Against the southern area of Judah, or against the southern area of the Jerahmeelites, or against the southern area of the Kenites.”