Bereshit 36:33

יובב בן זרח מבצרה JOBAB, THE SON OF ZERAH OF BOZRAH — Bozrah was one of the Moabite cities, as it is said (Jeremiah 48:24 which chapter is a prophecy against Moab), “[Judgment is come upon…] and upon Keriath and upon Bozrah etc.” Because it produced a king for Edom it is to be smitten together with them (the Edomites), as it is said (Isaiah 34:6) “For the Lord hath a slaughtering in Bozrah, [and a great slaughter in the Land of Edom]’ (Genesis Rabbah 83:3).

וַיָּ֖מׇת בָּ֑לַע וַיִּמְלֹ֣ךְ תַּחְתָּ֔יו יוֹבָ֥ב בֶּן־זֶ֖רַח מִבׇּצְרָֽה׃

And Bela died, and Yovav the son of Zeraĥ of Bożra reigned in his place;