וְהָיָ֨ה אֱד֜וֹם יְרֵשָׁ֗ה וְהָיָ֧ה יְרֵשָׁ֛ה שֵׂעִ֖יר אֹיְבָ֑יו וְיִשְׂרָאֵ֖ל עֹ֥שֶׂה חָֽיִל׃
And Edom shall be a possession, Seir also, even his enemies, shall be a possession; While Israel doeth valiantly.
Read kabbalistic (mystical) interpretation of Numbers 24:18: and classical mystical sources.