'Raise Up the Name of the Dead' in the Bible

And Boaz said, In the day you buy the field from the hand of Naomi, you must buy also from the hand of Ruth of Moab, the wife of the dead, to raise up the name of the dead upon his inheritance.

And also Ruth of Moab, the wife of Mahlon, I have purchased to be my wife, to raise up the name of the dead on his inheritance, so that the name of the dead may not be cut off from among his brothers and from the gate of his place. You are witnesses this day.