Just because the state has defined it doesn't mean it should be the one defining it. (i.e. just because some government agent claims the authority to do something does not mean that he has such authority.)
If it had been only private, then we would would not have had to wait until today to get gay marriage and polygamy.
You're argument is flawed, of course: the perfectly righteous has no need of a law, for the law is for the unrighteous.
If the general society is generally righteous then there is little need for [much] law, but increasing the number of laws does nothing to increase the general righteousness of the people, and in fact is counterproductive (See Jesus on traditions of the elders
).
If you really want to address the issue of homosexuality then the place to start is the heart, not the law.
(Fortunately, God is in the business of making clean the unclean, of making righteous the unrighteous — Isaiah 1:18)
That post didn’t make any sense, what did you say that will help conservatives actually save marriage law and defeat the democrats and libertarians on the issue?
For instance reverse Obama’s marriage changes at the federal level?