Luke 20:28
and they asked him a question, saying, "Teacher, Moses wrote for us that if a man's brother dies, having a wife but no children, the man must take the widow and raise up offspring for his brother.
Genesis 38:8
Then Judah said to Onan, "Go in to your brother's wife and perform the duty of a brother-in-law to her, and raise up offspring for your brother."
Genesis 38:11
Then Judah said to Tamar his daughter-in-law, "Remain a widow in your father's house, till Shelah my son grows up"--for he feared that he would die, like his brothers. So Tamar went and remained in her father's house.
Genesis 38:26
Then Judah identified them and said, "She is more righteous than I, since I did not give her to my son Shelah." And he did not know her again.
Deuteronomy 25:5-10
"If brothers dwell together, and one of them dies and has no son, the wife of the dead man shall not be married outside the family to a stranger. Her husband's brother shall go in to her and take her as his wife and perform the duty of a husband's brother to her.
Ruth 1:11-12
But Naomi said, "Turn back, my daughters; why will you go with me? Have I yet sons in my womb that they may become your husbands?