I Chronicles 1:44 Midrash

וַיָּ֖מָת בָּ֑לַע וַיִּמְלֹ֣ךְ תַּחְתָּ֔יו יוֹבָ֥ב בֶּן־זֶ֖רַח מִבָּצְרָֽה׃

And Bela died, and Jobab the son of Zerah of Bozrah reigned in his stead.

Read midrashic interpretation of I Chronicles 1:44: and classical rabbinic exegesis.