KJV:
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.
NASB:
"In the shadow of Heshbon The fugitives stand without strength; For a fire has gone forth from Heshbon And a flame from the midst of Sihon, And it has devoured the forehead of Moab And the scalps of the riotous revelers.