1 Samuel 27:8-9

8Now David and his men went up and raided the Geshurites, the Girzites, and the Amalekites [the enemies of Israel that Joshua had failed to annihilate]; for they had inhabited the land from ancient times, as one comes to Shur even as far as the land of Egypt.

9David attacked the land and did not leave a man or a woman alive, but he took the sheep, the cattle, the donkeys, the camels, and the clothing, and returned to Achish.