1 Samuel 27:12

10Achish said, “Against whom have you made a raid today?” David said, “Against the South of Judah, against the South of the Jerahmeelites, and against the South of the Kenites.”

11David saved neither man nor woman alive to bring them to Gath, saying, “Lest they should tell about us, saying, ‘David did this, and this has been his way all the time he has lived in the country of the Philistines.’”

12Achish believed David, saying, “He has made his people Israel utterly to abhor him. Therefore he will be my servant forever.”