1 Samuel 27:11
King James Version
“And David saved neither man nor woman alive, to bring to Gath, saying, Lest they should tell on us, saying, So did David, and so his manner all the while he dwelleth in the country of the Philistines.”
Context
8And David and his men went up, and invaded the Geshurites, and the Gezrites, and the Amalekites: for those of old the inhabitants of the land, as thou goest to Shur, even unto the land of Egypt.
9And David smote the land, and left neither man nor woman alive, and took away the sheep, and the oxen, and the asses, and the camels, and the apparel, and returned, and came to Achish.
10And Achish said, Whither have ye made a road to day? And David said, Against the south of Judah, and against the south of the Jerahmeelites, and against the south of the Kenites.
11And David saved neither man nor woman alive, to bring to Gath, saying, Lest they should tell on us, saying, So did David, and so his manner all the while he dwelleth in the country of the Philistines.
12And Achish believed David, saying, He hath made his people Israel utterly to abhor him; therefore he shall be my servant for ever.