1 Samuel 27:11 in the King James Version
And David saved neither man nor woman alive, to bring tidings to Gath, saying, Lest they should tell on us, saying, So did David, and so will be his manner all the while he dwelleth in the country of the Philistines.
Context
10 Achish 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.”
11 David 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.’”
12 Achish believed David, saying, “He has made his people Israel utterly to abhor him. Therefore he will be my servant forever.”