The Israelites and the men hiding in ambush had arranged a signal. When the men hiding in ambush ¹  sent up a smoke signal from the city,

But he went back ¹  once he reached ²  the carved images ³  at Gilgal. He said to Eglon, ⁴  “I have a secret message for you, O king.” Eglon ⁵  said, “Be quiet!” ⁶  All his attendants left.

So all the Israelites, the whole army, ¹  went up to ²  Bethel. ³  They wept and sat there before the Lord; they did not eat anything ⁴  that day until evening. They offered up burnt sacrifices and tokens of peace ⁵  to the Lord.