Luke 20:28
They asked him: Teacher, Moses wrote if a man's brother dies and he is childless, his brother should take the wife, and raise up seed for his brother.
Genesis 38:8
Then Judah said to Er's brother Onan: Go sleep with your brother's widow. Fulfill your obligation to her as her husband's brother. That way your brother may have descendants.
Genesis 38:11
Judah said to his daughter-in-law Tamar: Return to your father's house and remain a widow until my son Shelah grows up. He said this because he was afraid that Shelah would be killed, as his brothers had been. So Tamar went back home.
Genesis 38:26
Judah recognized them and said: She is more righteous than I, since I would not give her to my son Shelah. He did not sleep with her again.
Deuteronomy 25:5-10
When brothers live together and one of them dies without a son the wife of the deceased shall not marry outside the family to a strange man. Her husband's brother shall marry her and perform the duty of a husband's brother to her.
Ruth 1:11-12
You must go back, my daughters, Naomi replied. Why do you want to come with me? Do you think I could have sons again for you to marry?