Deuteronomy 2:12

2:12 Previously the Horites lived in Seir but the descendants of Esau dispossessed and destroyed them and settled in their place, just as Israel did to the land it came to possess, the land the Lord gave them.)

Deuteronomy 25:5

Respect for the Sanctity of Others

25:5 If brothers live together and one of them dies without having a son, the dead man’s wife must not remarry someone outside the family. Instead, her late husband’s brother must go to her, marry her, and perform the duty of a brother-in-law.