David and his men went up, and made a raid on the Geshurites, and the Girzites, and the Amalekites; for those [nations] were the inhabitants of the land, who were of old, as you go to Shur, even to the land of Egypt.
"The Negeb of Judah ... the Negeb of the Jerahmeelites ... the Negeb of the Kenites"  (1 Samuel 27:10).  "The word `Negeb' literally means. `the dry country.'"[12]  By these assertions, David convinced Achish that he was making all of those raids against Judah and related Israelites.  "The first named here was the tribe of Judah itself; the second of these three peoples was one of the prominent clans of Judah  (1 Chronicles 2:9,42)";[13] and the Kenites had been associated with Israel since the days of Moses, whose father-in-law Jethro was of the Kenites.  Also Jael who destroyed Sisera was a Kenite.  If David had actually raided these people, as he said he did, Achish's belief that Israel at that time abhorred David would have been true.