Ruth 1:11
But Naomi said, Go back, my daughters; why will you come with me? Have I more sons in my body, to become your husbands?
Genesis 38:11
Then Judah said to Tamar, his daughter-in-law, Go back to your father's house and keep yourself as a widow till my son Shelah becomes a man: for he had in his mind the thought that death might come to him as it had come to his brothers. So Tamar went back to her father's house.
Deuteronomy 25:5
If brothers are living together and one of them, at his death, has no son, the wife of the dead man is not to be married outside the family to another man: let her husband's brother go in to her and make her his wife, doing as it is right for a brother-in-law to do.