Then said Judah to Tamar his daughter in law, Remain a widow at your father's house, till Shelah my son be grown: for he said, Lest peradventure he die also, as his brothers did. And Tamar went and dwelled in her father's house.
And Onan knew that the seed should not be his; and it came to pass, when he went in to his brother's wife, that he spilled it on the ground, lest that he should give seed to his brother.
If brothers dwell together, and one of them die, and have no child, the wife of the dead shall not marry without to a stranger: her husband's brother shall go in to her, and take her to him to wife, and perform the duty of an husband's brother to her.
Turn again, my daughters, go your way; for I am too old to have an husband. If I should say, I have hope, if I should have an husband also to night, and should also bear sons;