1 Chronicles 11:15 in the King James Version
Now three of the thirty captains went down to the rock to David, into the cave of Adullam; and the host of the Philistines encamped in the valley of Rephaim.
Context
14 They stood in the middle of the plot, defended it, and killed the Philistines; and the LORD saved them by a great victory.
15 Three of the thirty chief men went down to the rock to David, into the cave of Adullam; and the army of the Philistines were encamped in the valley of Rephaim.
16 David was then in the stronghold, and the garrison of the Philistines was in Bethlehem at that time.