Thematic Bible: Not hereditary

Now these are the kings who were ruling in the land of Edom, before there was any king over Israel: Bela, the son of Beor; his town was named Dinhabah. At his death, Jobab, the son of Zerah of Bozrah, became king in his place. At the death of Jobab, Husham, from the land of the Temanites, became king in his place. read more.
And at the death of Husham, Hadad, the son of Bedad, who overcame Midian in the field of Moab, became king; his town was named Avith. And at the death of Hadad, Samlah of Masrekah became king in his place. And at the death of Samlah, Shaul of Rehoboth by the river became king in his place, And at the death of Shaul, Baal-hanan, the son of Achbor, became king in his place. And at the death of Baal-hanan, Hadad became king in his place; his town was named Pai, and his wife's name was Mehetabel, the daughter of Matred, the daughter of Me-zahab. And Hadad came to his end. Now the chiefs of Edom were: the chief of Timna, the chief of Aliah, the chief of Jetheth,