Deuteronomy 25:5-7

New Revised Standard Version, Anglicised

Levirate Marriage

⁵ When brothers reside together, and one of them dies and has no son, the wife of the deceased shall not be married outside the family to a stranger. Her husband’s brother shall go in to her, taking her in marriage, and performing the duty of a husband’s brother to her, ⁶ and the firstborn whom she bears shall succeed to the name of the deceased brother, so that his name may not be blotted out of Israel. ⁷ But if the man has no desire to marry his brother’s widow, then his brother’s widow shall go up to the elders at the gate and say, ‘My husband’s brother refuses to perpetuate his brother’s name in Israel; he will not perform the duty of a husband’s brother to me.’