Genesis 10:29
Hebrew Bible
25 Two sons were born to Eber: One was named Peleg because in his days the earth was divided, and his brother’s name was Joktan. 26 Joktan was the father of Almodad, Sheleph, Hazarmaveth, Jerah, 27 Hadoram, Uzal, Diklah, 28 Obal, Abimael, Sheba, 29 Ophir, Havilah, and Jobab. All these were sons of Joktan.
LXX Job 42:17
Septuagint
17 And Job died, an old man and full of days: 18 and it is written that he will rise again with those whom the Lord raises up. 19 This man is described in the Syriac book as living in the land of Ausis, on the borders of Idumea and Arabia: and his name before was Jobab;
Notes and References
"... The Jewish origins of the other additions are less certain. At the end of the final chapter of Job, the Septuagint offers five additional verses (Job 42:17–19). These verses assert that Job will be resurrected and that he was once called Jobab (Genesis 10:29). They give details of the family of Job/Jobab, the kings of Edom to whom Job belongs, and Job’s friends who were the kings of the neighboring lands (Jobab is named in LXX Gen 36:33–34 as the successor of Balak king of Edom). This mention of the resurrection may suggest a Christian origin, or there may be a connection to the Judaism of the Maccabees (which asserted that the good will be resurrected, but not the wicked: see 2 Maccabees 7:9, 11, 14, 23, 29) ..."
Dorival, Gilles The Septuagint from Alexandria to Constantinople: Canon, New Testament, Church Fathers, Catenae (pp. 40-41) Oxford University Press, 2021