Just to preface I had a more long winded argument but my browser froze so I will make it as quick as possible.
Using religion as a moral compass when weighing out policy decisions is different then directly implementing church belief into government policies. Those policies dictate how people live their life because a religious group sees them as dangerous to their faith filled society.
Liberty defined by a quick google search-
The state of being free within society from oppressive restrictions imposed by authority on one's way of life.
Honestly what are the reasons to justify a stance against gay marriage? (co sponsoring defense of marriage act), sodomy in the bedroom in his home state? (http://www.lewrockwell.com/paul/paul120.html specifically the third paragraph on that page, why should the states have any right to decide what ANYONE does in the bedroom let alone let Ron Paul say there is no promise of privacy granted to citizens) etc......
"the State of Texas has the right to decide for itself how to regulate social matters like sex, using its own local standards." - Ron Paul
Literally what is the problem that he has with it? His problem is only based in his religious intolerance. What else could it be, it doesnt hurt the economy, it doesnt hurt anyone else (I will allow the abortion topic to be excluded because of the whole life starts when debate even though I believe it happens much later then Paul does but everything else is inexcusable). The only reason hes against it is because its against religious doctrine. Im sure there are a lot of religions out there that have to deal with society ruining religious doctrine but the aren't trying to legislate the sinners into stopping. They realize that they live in their world and the other religious groups live in theirs and this country allows for that.
You can choose not to participate instead of outlawing what other people do that has no ill effect on anyone. Isnt that the original idea of how we are supposed to live our lives?
He says government has always stayed out of marriage through history but then said he would vote against gay marriage legislation because marriage to him is only between a man and a woman.
To me that would be a huge indicator of Ron Paul justifying Christian morals in restricting what people can do. No other reason then that.
He wants to reinstate penalties for flag burning (so much for that right to free speech)
The issue is he wants the states to be what the federal government currently is. Even if Ron Paul legalized Marijuana, states could still outlaw it and arrest you under his version of states rights. So we get 50 rogue states acting independently and constantly contradicting each other. Sounds so productive. Good luck guaranteeing equal rights across the country.
I dont think you could find any other justification for his actions. Whats liberty if it is not your version of liberty but someone else's. The only way to get around that is not to outlaw but to accept and realize that they wont interfere with your daily life and the favor should be returned (Isnt that the kind of approach Paul wants to take with foreign policy? lol). Like in all seriousness Im not trying to be a dick this time but these are some serious issues reflecting Ron Paul.