I know that shortly after Rutherford dismissed the idea that the new covenant was only for the Jews (as taught by Russell) he eventually began to formulate his new doctrines of how he felt it did apply to people. But I'm a little lost as to why exactly he chose to create this doctrine.
What were some of the deeper motiviations Rutherford had in creating this doctrine? I flipped through Pentons book but he really doesn't get into it. Aside from going back and actually reading through Rutherfords books (which I may do) I figured I would put this question on the board just in case somebody has already done the work