 It will not save you. It has no power to forgive your sin or justify you in the sight of God. So whatever else you want to understand about the golden rule, don't make it the end all of spirituality. It's a major principle if you understand it correctly in the word of God. But if you make it your only rule in life, you will miss totally its purpose. So you say if the golden rule is not conclusive and it's not comprehensive, then what's the use of it?