Jeremiah 48:45

Fugitives of the invasion would huddle in weakness, in the shadow of Heshbon-the ancient capital of Sihon king of the Amorites-because of the devastation planned and executed from there (cf. Jeremiah 48:2). The invasion would rob Moab and its complacent revelers of their glory, as when fire burns someone’s hair off.

"These words [i.e., "it has devoured the forehead of Moab"] have been taken by Jeremiah from Balaam’s utterance regarding Moab, Num. xxiv. 17, and embodied in his address after some transformation." [Note: Keil, 2:234.]