1 Samuel 27:8-10

8And David and his men went up, and invaded the Geshurites, and the Gezrites, and the Amalekites: for those nations were of old the inhabitants of the land, as thou goest to Shur, even to the land of Egypt.1 9And David smote the land, and left neither man nor woman alive, and took away the sheep, and the oxen, and the donkeys, and the camels, and the apparel, and returned, and came to Achish. 10And Achish said, Where have ye plundered to day? And David said, Against the south of Judah, and against the south of the Jerahmeelites, and against the south of the Kenites.2