For example, my thoughts are inherent, they are a part of me- my tongue is a natural part of me that allows me to articulate my thoughts and therefore my freedom of speech is just as NATURAL as my NATURAL ability to speak. The laws of nature say that I have a natural right to speak freely and the 1st amendment to the Constitution protects that natural right. Many of the problems with our society today come from the idea that government can create "rights." The laws of nature carry more authority than the laws of government so when the government tries to extend "natural" rights beyond the parameter of natural law unintended yet predictable consequences might very well begin to happen. Think about this: No one has a "right" to your hard earned money but the welfare state says that SOME people do have a "right" to your money. Practices like this in-turn will only lead to bigger government as they attempt to "solve" all the problems that it often responsible for creating in the first place.
I firmly believe that it is not the role of government to tell you who you can and cannot have a relationship with, I think everyone can agree about that, but I personally believe that marriage, as a religious institution, is between a man and a woman. I also think that it might not be a good idea for government to start defining religious institutions like marriage, especially when the MIAC Report and the DHS identify Christians as possible "militia influence extremist" etc. With this kind of rhetoric coming from an increasingly authoritarian central government I wonder how long it will be until they define what a "real" church is or what a "real" Christian is, all for the sake of national security of course.
Marriage, as an institution, is the jurisdiction of God. If homosexual couples are wanting to enjoy the same rights currently reserved for married heterosexual couples, hospital visitation and tax benefits etc., there are ways to do that without the government defining the religious institution of marriage. Also, just for full disclosure, I'm not a fan of the idea that the government requires you to have a license before getting married. Is getting married so dangerous that we have to have a license and government approval and oversight first? George Washington and Abraham Lincoln never had a marriage but now everyone else does. It is just another mandate from big government that probably should have never been part of our nations history.
The state should not be meddling with religious institutions of faith nor defining them one way or the other. This is what Thomas Jefferson was referring to when he was trying to convey to the Baptist of Danbury, CT that there was a "wall of separation between church and state" that would keep them free from government intrusiveness. This is something our founders warned us to be careful of. If the people decide something on this issue by way of Constitutional amendment, that would be different in the sense that we the people directly embrace the law instead of having it implemented by politicians, or worse, unelected members of the court.
The writings of the founders indicate that separation of church and state was never intended to prevent religion from having an influence on the government, but rather it was intended to prevent the state from mandating religious practice or otherwise interfering with the doctrine or administration of churches etc. We would do well to remember that.