1 Samuel 29:1

Thus the word of Samuel came to all Israel. Now Israel went out to meet the Philistines in battle and camped beside Ebenezer, and the Philistines camped in Aphek.

Now it happened in those days that the Philistines gathered their armed camps for war, to fight against Israel. And Achish said to David, “Know assuredly that you will go out with me in the camp, you and your men.”

And he made him king over Gilead, over the Ashurites, over Jezreel, over Ephraim, and over Benjamin, even over all Israel.

Then the Philistines heard that they had anointed David king over Israel, so all the Philistines went up to seek out David. And David heard of it and went down to the fortress.

Gebal and Ammon and Amalek, Philistia with the inhabitants of Tyre;

Achish Makes David Leave the Battle