So Achish trusted David, thinking, "Since he has made himself an utter stench to his people Israel, he will be my servant forever."

Exodus 5:21
"May the LORD look upon you and judge you," the foremen said, "for you have made us a stench before Pharaoh and his officials; you have placed in their hand a sword to kill us!"

1 Samuel 27:11
David did not leave a man or woman alive to be brought to Gath, for he said, "Otherwise they will report us, saying, 'This is what David did.'" And this was David's custom the whole time he lived in Philistine territory.

1 Samuel 28:1
Now in those days the Philistines gathered their forces for warfare against Israel. So Achish said to David, "You must understand that you and your men are to go out to battle with me."

2 Samuel 10:6
When the Ammonites realized that they had become a stench to David, they hired twenty thousand Aramean foot soldiers from Beth-rehob and Zoba, as well as a thousand men from the king of Maacah and twelve thousand men from Tob.

And Achish believed David, saying, He has made his people Israel utterly to abhor him; therefore he shall be my servant for ever.