When the Philistines heard that David had been designated king over Israel, they all went up to search for David. When David heard about it, he went down to the fortress.
Afterward you will go to Gibeah of God, where there are Philistine officials. When you enter the town, you will meet a company of prophets coming down from the high place. They will have harps, tambourines, flutes, and lyres, and they will be prophesying.
All Israel heard this message, “Saul has attacked the Philistine outpost, and now Israel is repulsive to the Philistines!” So the people were summoned to join Saul at Gilgal.
Jonathan said to his armor bearer, “Come on, let’s go over to the garrison of these uncircumcised men. Perhaps the Lord will intervene for us. Nothing can prevent the Lord from delivering, whether by many or by a few.”
So David left there and escaped to the cave of Adullam. When his brothers and the rest of his father’s family learned about it, they went down there to him.