OT-LAW.filter - rsv duty:

rsv@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."

rsv@Deuteronomy:25:5 @ "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.

rsv@Deuteronomy:25:7 @ And if the man does not wish to take his brother's wife, then his brother's wife shall go up to the gate to the elders, 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.'