What does Judges 20:38 mean?
Israel's ambush (Judges 20:19) has worked perfectly. When their false retreat drew away the bulk of Benjamin's army (Judges 20:32–34), specially chosen fighters ambushed the city, killing everyone inside as God's judgment for the city's wickedness (Judges 19:22–28; 20:12). After defeating the inhabitants, Israel's forces set fire to the city.This is not merely an act of destruction. The massive cloud of smoke which rises into the sky as the city burns serves as a signal. It will inform the rest of Israel's army that Gibeah is destroyed. The Israeli fighters luring the Benjaminites with a false retreat will see the smoke, know the Benjaminites have nowhere to fall back, and can turn to counterattack (Judges 20:40–42).