Joshua 8:20

Now the appointed sign between the men of Israel and the men in ambush was that they would make a great cloud of smoke rise from the city.

But the cloud began to rise from the city in a column of smoke, and Benjamin turned behind them; and behold, the whole city was going up in smoke to heaven.

“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.