Cross reference
2 Kings 3:8
8 And he said, Which way are we to go? And he said in answer, By the waste land of Edom.
Numbers 21:4
4 Then they went on from Mount Hor by the way to the Red Sea, going round the land of Edom: and the spirit of the people was overcome with weariness on the way.
Malachi 1:2-3
2 You have been loved by me, says the Lord. But you say, Where was your love for us? Was not Esau Jacob's brother? says the Lord: but Jacob was loved by me,
3 And Esau was hated, and I sent destruction on his mountains, and gave his heritage to the beasts of the waste land.