So Achish called David and said to him, "As surely as the LORD lives, you have been reliable, and I would be pleased to have you serve with me in the army. From the day1 you came to me until now, I have found no fault in you, but the rulers2 don't approve of you.
References for 1 Samuel 29:6
Turn back and go in peace; do nothing to displease the Philistine rulers."
"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?"
Achish answered, "I know that you have been as pleasing in my eyes as an angel3 of God; nevertheless, the Philistine commanders4 have said, 'He must not go up with us into battle.'
References for 1 Samuel 29:9
Now get up early, along with your master's servants who have come with you, and leave5 in the morning as soon as it is light."
References for 1 Samuel 29:10
So David and his men got up early in the morning to go back to the land of the Philistines, and the Philistines went up to Jezreel.