I would disagree with Luther, Calvin and Wesley in their interpretation and application of the case with Onan.
I know you don't want to exegete the Onan passage here and that's fine, but, if I may, why do you think it was that they all got it wrong? Did the social environment they lived in lead them to this error? Obviously many would say that's the case, and that now we should adapt to modern sensibilities. I doubt if you'd put it that way, but I don't really know what you would say about it, hence my interest.
Also, is there any other passage, or issue in which all the reformers and all their successors got scripture wrong?
