Joshua 8:5

Then the king arose in the night and said to his servants, “I will now tell you what the Arameans have done to us. They know that we are hungry; therefore they have gone from the camp to hide themselves in the field, saying, ‘When they come out of the city, we will capture them alive and get into the city.’”

But Jeroboam had encircled an ambush to come from the rear, so that Israel was in front of Judah and the ambush was behind them.

“Wail, O Heshbon, for Ai has been destroyed! Cry out, O daughters of Rabbah, Gird yourselves with sackcloth and lament, And rush back and forth inside the walls; For Malcam will go into exile Together with his priests and his princes.