Once during the harvest, when David was at the cave of Adullam, the Philistine army was camped in the valley of Rephaim. The Three (who were among the Thirty—an elite group among David’s fighting men) went down to meet him there.
The whole land will look like a grainfield after the harvesters have gathered the grain. It will be desolate, like the fields in the valley of Rephaim after the harvest.
The boundary then passed through the valley of Ben-Hinnom, along the southern slopes of the Jebusites, where the city of Jerusalem is located. Then it went west to the top of the mountain above the valley of Hinnom, and on up to the northern end of the valley of Rephaim.