Jeremiah 48:45

They that fled, the fugitives who escaped the slaughter, stood under the shadow of Heshbon because of the force, powerless in the face of the danger confronting them; but a fire shall come forth out of Heshbon, the city in which they hoped to find refuge, and a flame from the midst of Sihon, the ancient king of the Amorites, and shall devour the corner of Moab, so that it would be totally destroyed, and the crown of the head of the tumultuous ones, of the sons of warlike confusion. The prophet here applies the ancient hymn. Numbers 21:27, to the circumstances before him; for as in ancient times Sihon, king of the Amorites, came forth from his city, Heshbon, like a devouring flame, which consumed Moab, so the Chaldeans, starting from Heshbon, would descend upon the country of the Moabites and destroy their power.