en_tn/jdg/20/22.md

strengthened themselves

Here "strengthened" is an idiom that means they encouraged each other. (See: rc://en/ta/man/translate/figs-idiom)

they formed the battle line

This probably means that the Israelites prepared their battle lines for the next day's fighting. AT: "they got ready to fight the next day"

they sought direction from Yahweh

The method they used is not stated. The priest may have cast lots to determine God's will.