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Im not sure what you are referring too here... there are varying degrees of what we constitute as moral or not moral... Hence why Ethics is a considered philosophy.... I dont think there is any opposition in morality, for me I feel as if we as a human race have stayed pretty constant. The only difference now, is we are more connected.
Again morality is relative, and they vary. So judging something is more or less moral is relative to what you believe. The question becomes, how do your actions make you feel after, do they lead to greater unhappiness or do they give you joy. If we break it down to a basic level then everyone has these basic attributes. You bring up a valid point, in how we were raised and what we seen plays a role on how we perceive the world. However, we all have the value of free will too make different decisions as we grow up.
I am unsure how religion is related to morality.... Maybe your thinking more along the lines of Abrahmic religions and the 10 commandments?
Religion serves a purpose for those involved and those who participate with in it... what, and how that participation manifest in your life is your decision. Some ppl will join for a sense of belonging, others will join because the message provides an opportunity to transcend. The need is individual....
I don't recall any of our Guru's saying that they had any idea of what our creator wanted? I also dont know what you mean by literally speaking to the divine? How would the divine speak back?
I think for alot of the basic questions you ask, if you did a little more reading you would probably benefit. Please see this link as a basic starting point for a lot of the basic questions you bring up.
http://www.sikhiwiki.org/index.php/Main_Page
One more quick thought, Guru Shabad that is mentioned through out Sri Guru Granth Sahib Ji, doesn't specifically limit to only the Shabad contained within the Sri Guru Granth Sahib Ji. It actually to me means any word of god which we believe to be true... it can come from anywhere really, as long as it proves true for you.
