Jeremiah 48:45

They that fled stood under the shadow of Heshbon because of the force: but a fire shall come forth out of Heshbon, and a flame from the midst of Sihon, and shall devour the corner of Moab, and the crown of the head of the tumultuous ones.

Jeremiah 48:45 belongs to Jeremiah's prophecy concerning Moab, a power that would fall before Nebuchadnezzar. It pictures those who fled standing under the shadow of Heshbon because of force, seeking refuge there, while fire comes forth out of Heshbon and flame from the midst of Sihon to overtake and devour Moab, even the corner of Moab and the crown of the head of the tumultuous ones. That fire and flame are an image of destructive, consuming war brought against Moab.