And it came to pass in those days, that the Philistines gathered their armies together for warfare, to fight with Israel. And Achish said unto David, Know thou assuredly, that thou shalt go out with me to battle, thou and thy men.
Berean Study Bible (BSB) - 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.”