Moral Law
“A Mason is obliged by his tenure to obey the moral law.” For Masons enjoying the benefits of the Jewish religion or of Christianity this requirement comprehends also the law of nature, which is “the will of God, relating to human actions, grounded on the moral differences of things; and discoverable by natural light, obligatory upon all mankind,” and written on the human conscience.
http://wesley.nnu.edu/?id=3615
http://masonic.wikidot.com/moral-law
http://www.themasonictrowel.com/Articles/Freemasonry/values_files/the_moral_law_gltx.htm
http://www.jstor.org/stable/1372834?seq=1#page_scan_tab_contents
https://www.academia.edu/5578304/The_Moral_Obligation_to_Obey_Law
http://onlinelibrary.wiley.com/doi/10.1111/0047-2786.00153/abstract
I have added a link to the following Blog Talk radio program, as they mention Freemasonry specifically, and our obligations to follow Moral Law.
http://www.blogtalkradio.com/warrior4truthradio/2014/01/10/who-is-your-god