You are being obtuse. You deny the self evident forest for the arbitrary trees. There are self evident truths and inalienable rights -the Founders stated as much! Marriage is one of those truths.
You can pretend this is not so RATHER than seek to understand what you are obviously ignorant about. Whose God? You better find out -as YOUR inalienable rights are endowed by the Creator you are blind to AND unless you want to be a government endowed useful idiot piece of meat you better get busy
The Founders believed-- and so do I--that we are endowed by our Creator with life and liberty. The Founders also knew that, beyond that broad level of generality, religions disagree sharply with each other about exactly what is "God's will." They therefore set up a government under which the people, through their elected representatives, can enact laws without having to seek the permission of any clergy who purport to speak for God. Their wisdom in that regard is amply demonstrated by the experience of other societies-- ranging from Calvin's Geneva to Islamic Iran-- which have given mortal men who claim to know "God's will" the power to make laws.