Deuteronomy 25:5
World English Bible (WEB)
"If brothers dwell together, and one of them die, and have no son, the wife of the dead shall not be married outside to a stranger: her husband's brother shall go in to her, and take her to him as wife, and perform the duty of a husband's brother to her."
About Deuteronomy
Moses' final speeches reviewing the Law before Israel enters Canaan.
Old Testament • Book #5