Martin Luther: Renegade and Prophet by Lyndal Roper The Bodley Head, 2016, 577 pages, $60 ___________________________ The Protestant Reformation turns 500 this year. According to the tenets of most churches in the Reformation tradition, there is no requisite mediator between God and Christians outside the Holy Trinity—and so the Virgin Mary cannot be the “mediatrix of all graces”. The New Testament of Jesus Christ requires no interpreter, is straightforward in its message and generally understandable by faithful Christians. We are justified by faith, not by good works, though good works follow naturally in the wake of faith. Not only can’t…