כִּ֣י שַׁדְמוֹת֩ חֶשְׁבּ֨וֹן אֻמְלָ֜ל גֶּ֣פֶן שִׂבְמָ֗ה בַּעֲלֵ֤י גוֹיִם֙ הָלְמ֣וּ שְׂרוּקֶּ֔יהָ עַד־יַעְזֵ֥ר נָגָ֖עוּ תָּ֣עוּ מִדְבָּ֑ר שְׁלֻ֣חוֹתֶ֔יהָ נִטְּשׁ֖וּ עָ֥בְרוּ יָֽם׃
Denn die Fruchtgefilde Hesbons sind welk; der Weinstock Sibmas — die Kriegsmänner von Gojim zerschlugen seine Ranken; bis Jaser reichten sie, erstreckten sich der Wüste zu, ihre Aeste rankten weit über das Meer hin.
Ibn Ezra on Isaiah
שדמות Vine trees.14A. V., Fields. Comp. Deut. 32:32.
Rashi on Isaiah
the vine of Sibmah We can deduce that Heshbon was a place of fields and Sibmah a place of vineyards. Now if you ask, All these are cities of the east side of the Jordan, and Israel took them from the hands of Sihon. Now when did they return to the hands of Moab? When Sennacherib exiled the Reubenites and the Gadites, the neighboring Moabites came and settled in them.