Judges 20:38-40

38The Israelites and the men hiding in ambush had arranged a signal. When the men hiding in ambush sent up a smoke signal from the city,

39the Israelites counterattacked. Benjamin had begun to strike down the Israelites; they struck down about thirty men. They said, “There’s no doubt about it! They are totally defeated as in the earlier battle.”

40But when the signal, a pillar of smoke, began to rise up from the city, the Benjaminites turned around and saw the whole city going up in a cloud of smoke that rose high into the sky.