Deuteronomy 25:5; Deuteronomy 25:6

Deuteronomy 25:5

5 If brothers are living together and one of them dies without a son, his widow must not marry outside the family. Her husband’s brother shall take her and marry her and fulfill the duty of a brother-in-law to her.

Deuteronomy 25:6

6 The first son she bears shall carry on the name of the dead brother so that his name will not be blotted out from Israel.