1 Samuel 21:10-15
And David arose and fled that day for fear of Saul, and went to Achish the king of Gath.
Nave's Topical Index—AKJV

1 Samuel 27:2-12
And David arose, and he passed over with the six hundred men that were with him to Achish, the son of Maoch, king of Gath.
Nave's Topical Index—AKJV

1 Samuel 28:1,2
And it came to pass in those days, that the Philistines gathered their armies together for warfare, to fight with Israel. And Achish said to David, Know you assuredly, that you shall go out with me to battle, you and your men.
Nave's Topical Index—AKJV

1 Samuel 29:1
Now the Philistines gathered together all their armies to Aphek: and the Israelites pitched by a fountain which is in Jezreel.
Nave's Topical Index—AKJV