Cross reference
Romans 9:12
12 it was said unto her, The elder shall serve the younger.
Genesis 25:22-23
22 And the children struggled together within her. And she said, If it be so, wherefore do I live? And she went to inquire of Jehovah.
23 And Jehovah said unto her, Two nations are in thy womb, And two peoples shall be separated from thy bowels. And the one people shall be stronger than the other people. And the elder shall serve the younger.
2 Samuel 8:14
14 And he put garrisons in Edom; throughout all Edom put he garrisons, and all the Edomites became servants to David. And Jehovah gave victory to David whithersoever he went.
1 Kings 22:47
47 And there was no king in Edom: a deputy was king.