Charles Ellicott Commentary Jeremiah 48:5

"For by the ascent of Luhith with continual weeping shall they go up; for at the descent of Horonaim they have heard the distress of the cry of destruction." — Jeremiah 48:5 (ASV)

In the going up of Luhith. —Here again we have an echo from Isaiah 15:5. Jerome (Onomast. s.v. Luith) describes it as between Zoar and Areopolis (= Rabbath-Moab). The ascent was probably to a local sanctuary. A various reading, Laboth, followed by the Septuagint, gives the meaning “the ascent of planks,” as though it were a wooden staircase. In both that ascent and in the descent from Horonaim (possibly the fugitives who came down from the heights of the one city are represented as going up with wailing to the other) the enemies of Moab would hear the cry that proclaimed its downfall.