Thematic Bible: Not hereditary

And these are the kings that reigned in the land of Edom before there reigned a king over the children of Israel: Bela the son of Beor; and the name of his city was Dinhabah. And Bela died; and Jobab the son of Zerah of Bozrah reigned in his stead. And Jobab died; and Husham of the land of the Temanites reigned in his stead. read more.
And Husham died; and Hadad the son of Bedad, who smote Midian in the fields of Moab, reigned in his stead: and the name of his city was Avith. And Hadad died; and Samlah of Masrekah reigned in his stead. And Samlah died; and Saul of Rehoboth on the river reigned in his stead. And Saul died; and Baal-hanan the son of Achbor reigned in his stead. And Baal-hanan died; and Hadad reigned in his stead: and the name of his city was Pai; and his wife's name was Mehetabel the daughter of Matred, daughter of Mezahab. And Hadad died. And the chiefs of Edom were: chief Timna, chief Aliah, chief Jetheth,