NET Bible
"Neither man nor woman would David leave alive so as to bring them back to Gath. He was thinking,“This way they can’t tell on us, saying,‘This is what David did.’” Such was his practice the entire time that he lived in the country of the Philistines."
— 1 Samuel 27:11, NET Bible
“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.”
“And David saved neither man nor woman alive, to bring them to Gath, saying, Lest they should tell of us, saying, So did David, and so hath been his manner all the while he hath dwelt in the country of the Philistines. ”
“David saved neither man nor woman alive, to bring them to Gath, saying, "Lest they should tell of us, saying, 'So did David, and so has been his way all the while he has lived in the country of the Philistines.'"”
“And David saved neither man nor woman, neither brought he any of them to Geth, saying: Lest they should speak against us. So did David, and such was his proceeding all the days that he dwelt in the country of the Philistines.”
“Not one living man or woman did David ever take back with him to Gath, fearing that they might give an account of what had taken place, and say, This is what David did, and so has he been doing all the time while he has been living in the land of the Philistines.”
“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.”
Then David and his men went up and raided the Geshurites, the Girzites, and the Amalekites.(They had been living in that land for a long time, from the approach to Shur as far as the land of Egypt.)
When David would attack a district, he would leave neither man nor woman alive. He would take sheep, cattle, donkeys, camels, and clothing and would then go back to Achish.
When Achish would ask,“Where did you raid today?” David would say,“The Negev of Judah” or“The Negev of Jeharmeel” or“The Negev of the Kenites.”
Neither man nor woman would David leave alive so as to bring them back to Gath. He was thinking,“This way they can’t tell on us, saying,‘This is what David did.’” Such was his practice the entire time that he lived in the country of the Philistines.
So Achish trusted David, thinking to himself,“He is really hated among his own people in Israel! From now on he will be my servant.”