isaiah 15:5 My heart shall cry out for Moab; his fugitives shall flee unto Zoar, an heifer of three years old: for by the mounting up of Luhith with weeping shall they go it up; for in the way of Horonaim they shall raise up a cry of destruction. - Free Bible Online

      5. My--The prophet himself is moved with pity for Moab. Ministers, in denouncing the wrath of God against sinners, should do it with tender sorrow, not with exultation.
      fugitives--fleeing from Moab, wander as far as to Zoar, on the extreme boundary south of the Dead Sea. HORSLEY translates, "her nobility," or "rulers" (Ho 4:18).
      heifer, &c.--that is, raising their voices "like a heifer" (compare Jer 48:34, 36). The expression "three years old," implies one at its full vigor (Ge 15:9), as yet not brought under the yoke; as Moab heretofore unsubdued, but now about to be broken. So Jer 31:18; Ho 4:13. MAURER translates, "Eglath" (in English Version, "a heifer") Shelishijah (that is, the third, to distinguish it from two others of the same name).
      by the mounting up--up the ascent.
      Luhith--a mountain in Moab.
      Horonaim--a town of Moab not far from Zoar (Jer 48:5). It means "the two poles," being near caves.
      cry of destruction--a cry appropriate to the destruction which visits their country.

JFB.