Help the religious pluralist see that he does not really believe that all roads lead to heaven. If he did, then he would not express outrage at suicide bombings, human sacrifice, and other such practices that even staunch religious pluralists find abhorrent. One cannot consistently embrace religious pluralism and relativism and at the same time object to any religious belief or practice. If sincerity is all that matters for salvation, religious terrorists who sincerely believe their god calls them to kill others do nothing wrong when they obey him. To condemn even one religious belief is to appeal to some ultimate, normative standard by which we may evaluate religion, establishing that standard as the one, true religion – and there can be no one, true religion for the honest religious pluralist.
Robert Rothwell