וְאֵ֙לֶּה֙ הַמְּלָכִ֔ים אֲשֶׁ֥ר מָלְכ֖וּ בְּאֶ֣רֶץ אֱד֑וֹם לִפְנֵ֥י מְלָךְ־מֶ֖לֶךְ לִבְנֵ֥י יִשְׂרָאֵֽל׃
And these are the kings that reigned in the land of Edom, before there reigned any king over the children of Israel.
Read halakhic rulings (Jewish law) on Genesis 36:31: and classical halakhic sources.