That works when we are at YOUR church, but John’s Mosque says that God defined marriage as polygamy, and Joey of the Gay Goat church, says that it is defined as 2 or more men joined in love forever.
Pretending in modern America, that religion’s definition of ‘marriage’ suffices, isn’t enough.
“Religion” didn’t create the definition any more than it created the definition of “air”. The definition has been long established and universally recognized for over 5000 years. So I don’t care how “John’s Mosque” or “Joey gay goat” came along and tried to redefine it. They can no more change the meaning than they can change the meaning of gravity. It is what it is. They can try to create something new, but it’s not marriage.