1 Samuel 27:8-28:2

8 During that time David and his men attacked the Geshurites, the Girzites and the Amalekites. These tribes had lived in that place for a very long time. Their land went as far as Shur and the border of Egypt. 9 Whenever David's men attacked them, they killed all the men and women. But they took all their sheep, cows, donkeys and camels, as well as their clothes. Then they would return to see King Achish.

10 Achish would ask David, ‘Which place did you go and attack today?’ Sometimes David would say, ‘We robbed the people of a town in Judah's desert.’ Or David might say, ‘We attacked a town in the desert where the people of Jerahmeel's clan live.’ Or he might say, ‘We attacked a town in the desert where the Kenites live.’

11 David killed all the people in the places that he attacked. He never took anyone back to Gath. He thought, ‘If any of the people are still alive, they might go to Gath and tell people what we have done.’

That is what David did for the whole time that he lived among the Philistines. 12 So King Achish trusted David. He thought, ‘The Israelites must now hate David very much. So David will have to be my servant for ever.’

1 Samuel 28

1 At that time, the Philistine army joined together to fight against the Israelites. King Achish said to David, ‘I hope you know that you and your men must fight with me in the battle.’

2 David said, ‘Yes, sir. Then you will see how well I can fight!’

Achish replied, ‘Good. Then you will always be my guard to keep me safe.’