Every good

Good reason with good support or justification is enough authority for a rule to be considered as a moral standard. The moral standard that says: “Do not do unto others what you do not want others do unto you” earns its being a moral standard from the sound reason that if indeed one do not do bad or wrong to others, then he will surely benefit from not being done bad or harmed by others too.  It neither needs to be declared and supported by religious groups nor Pope Francis for it to be a moral standard.