Spread themselves - An expression used of the Philistine mode of war 2 Samuel 5:18, 2 Samuel 5:22, alluding to the compact way in which they came up the wadys, and then distpersed. Lehi is so called by anticipation (see Judges 15:17).
Related Commentaries of Judges 15:9
Judges 15:9
9 Then the Philistines went up, and pitched in Judah, and spread themselves in Lehi.