Most reasonable people don’t need Jesus to define marriage.
...nor does Jesus need permission from this fruit loop in order to define it.....which He did through His revealed Word.
Most reasonable people have at least heard the story of the wedding at Cana
Nor do they need Anthony Kennedy, but surely they ought to appreciate what Jesus is recorded as saying in Matthew 19. That human beings are created male and female, that as Black stone put it, Man embraces woman. Monogamous marriage is the joining together of one man and one woman in a conjugal union which is enjoined to be fruitful.