Thus it can be seen that, “morality” is best understood as a retroactive description of core “evolutionarily-necessary behaviour” that serves an essential function in ensuring the continued survival and self-preservation of human communities, thereby ensuring our species’ long-term evolutionary success. The functional role of nature as an “umpire” that polices religious and societal practices and forces their conformity to the evolutionary-necessary behaviour of self-preservation establishes it, not religion, as both the source of what we understand as morality, and the ultimate standard by which to judge what is and is not morally correct.
But even if one were to approach this question from a religious perspective, the validity of this argument is still demonstrated. If we are to operate under the assumption that “God”, however one wishes to interpret him, created the universe and everything in it, then it follows that the inherent truth of God’s laws should be reflected within the fabric of the universe that he has created and has dominion over.
Furthermore, it is not unreasonable to assume that, through the passage of time, incorrect translation of language, or simple human error, falsities may have inadvertently entered the transmission of God’s teachings from one generation to the next. If so, how are we to affirm whether and to what degree God’s teachings are being properly represented? To answer this, we can only turn to the natural world that God has crafted in order to rediscover and affirm, through observation, the universal truths that he has established.