en_tn/jdg/11/09.md

leader and commander

These two words basically mean the same thing and are used together to emphasize how important Jephtah became. (See: rc://en/ta/man/translate/figs-doublet)

When he was before Yahweh

AT: "When he was at a special place where people worship Yahweh" (See: rc://en/ta/man/translate/figs-idiom)