en_tn_condensed/jdg/15/09.md

the Philistines came up ... in Judah

The phrase "came up" is used here because Judah is higher in elevation than Philistia.

encamped in Judah

They set up their tents in Judah. This synecdoche means that they prepared to make war against Judah. Alternate translation: "prepared to make war against Judah" (See: rc://en/ta/man/jit/figs-synecdoche)

spread out

moved apart from each other so they could control as much land as possible

Lehi

This is the name of a town in Judah. (See: rc://en/ta/man/jit/translate-names)