Three of the 30 leading warriors went down at harvest time and came to David at the cave of Adullam, while a company of Philistines was camping in the Valley of Rephaim.
It will be as if a reaper had gathered standing grain — his arm harvesting the heads of grain — and as if one had gleaned heads of grain in the Valley of Rephaim.
So David left Gath and took refuge in the cave of Adullam. When David’s brothers and his father’s whole family heard, they went down and joined him there.