I like you, so I will take baby steps.
Marriage is a religious sacrament.
Laws respecting the sacrament of marriage are laws respecting an establishment of religion.
The way a religion interprets one event and the way a government does can be completely different, as they are with marriage. Some religions don’t recognize divorce for instance. Just like the holiday of Christmas. Christians celebrate it one way but secular people celebrate it differently. Every religion could disappear and be forgotten, but marriage could still exist as a secular institution if people wanted it to.
You’re actually suggesting that religion should have control over our lives by law. Because if religion thinks of a concept first, you’re saying it must then be barred from ever being legally recognized by the government.
Atheists get married.
Your fake argument is bulls***.