“Teacher, Moses wrote for us that if a man's brother dies and leaves a wife, but leaves no child, the man must take the wife, and raise up children for his brother.
“If brothers dwell together, and one of them dies and has no son, the wife of the dead 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.