The Philistines also came and spread themselves in the valley of Rephaim. Or "of the giants", as Joshua 15:8; which lay to the west of Jerusalem; of which, Joshua 15:8; the Philistines spreading themselves in it, shows that they were very numerous.
Related Commentaries of 2 Samuel 5:18
2 Samuel 5:18
18 The Philistines also came and spread themselves in the valley of Rephaim.