1 Samuel 29:8

And David said to Achish , But what have I done ? What have you found in your servant from the day I entered your service until now , that I may not go and fight against the enemies of my lord the king ?

“But what have I done?” asked David. “What have you found against your servant from the day I came to you until now? Why can`t I go and fight against the enemies of my lord the king?”

And David said unto Achish, But what have I done? and what hast thou found in thy servant so long as I have been with thee unto this day, that I may not go fight against the enemies of my lord the king?