Deuteronomy 25:5; Deuteronomy 32:16

Deuteronomy 25:5

5 If brethren dwell together, and one of them die, and have no child, the wife of the dead shall not marry without unto a stranger: her husband's brother shall go in unto her, and take her to him to wife, and perform the duty of an husband's brother unto her.

Deuteronomy 32:16

16 They provoked him to jealousy with strange gods, with abominations provoked they him to anger.