en_tn_condensed/jdg/11/08.md

That is why we are turning to you now

The word "that" refers to what Jephthah said about about them being in trouble. The full meaning of this statement can be made clear. Alternate translation: "We are turning to you now because we are in trouble" (See: rc://en/ta/man/jit/figs-explicit)

fight with the people of Ammon

"fight against the people of Ammon"