Genesis 36:31

"And these are the kings that reigned in the land of Edom, before there reigned any king over the children of Israel."

Cross References (ranked by relevance)

And I will make thee exceeding fruitful, and I will make nations of thee, and kings shall come out of thee.

And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall be of her.

Deuteronomy 33:5

And he was king in Jeshurun, when the heads of the people and the tribes of Israel were gathered together.

Genesis 25:23

And the LORD said unto her, Two nations are in thy womb, and two manner of people shall be separated from thy bowels; and the one people shall be stronger than the other people; and the elder shall serve the younger.

Numbers 20:14

And Moses sent messengers from Kadesh unto the king of Edom, Thus saith thy brother Israel, Thou knowest all the travail that hath befallen us:

Deuteronomy 33:29

Happy art thou, O Israel: who is like unto thee, O people saved by the LORD, the shield of thy help, and who is the sword of thy excellency! and thine enemies shall be found liars unto thee; and thou shalt tread upon their high places.