That's a good question, which is part of the reason I cited Paul and 1 Corinthians in conjunction with it.
The fulfillment of the Laws of Moses was a fairly complicated thing. On certain issues, such as eating non-kosher meat and performing works on the Sabbath, Jesus was very liberal. Yet, on the sexual sins, Jesus's stand is just as much against it, if not moreso, than the laws of Moses (see Matthew 5:28, for one example). Where he differs is punishment: he does not condone stoning as punishment, but offers a chance to repent (John 7:53-8:11). It's interesting here that Leviticus gives two options for the punishment of sexual sins: getting “cut off from his people” (in chapter 18) or death by stoning (chapter 20). It's the former that Paul suggests for the sexual sinner in Corinth; he tells the Corinthians to not even eat with the sinner. The Apostles also agree that sexual immorailty is to be forbidden in the church (Acts 15:19). To be cut off and thrown out of the church still allows for the sinner to turn away from his (or her) misdeeds and seek reconciliation. But the underlying sin is, throughout the Old and New Testament, still considered sin, just as it was in Leviticus. That isn't the case with a lot of other sins, which were expressly targeted at those who had made the covenant with the Jewish people.
So the double standard goes all the way back to Christ Himself.
Thanks for the thorough response.
I have a good friend who I consider my ultimate resource on all things Christianity, he and I had a related conversation years ago on the subject of the old law (dietary on that instance) and one thing a said stuck to me (I'm paraphrasing): Jesus either fulfilled the law, all of the law, or He failed, since He said that His purpose here was to fulfill the law.
So, and gathering from your post and the idea of the law's fulfillment by His death, compulsory punishments for those behaviors prohibited by the Old Law, whether dietary or sexual (interestingly, Deuteronomy condemns cross-dressing, which tells me that there was cross-dressing happening at the time the Book of Deuteronomy was written), whether death by stoning or shunning, are no longer in effect, and the new law is. The new law affords sinners the opportunity to repent for their sins, right up until the moment of their death.
That being the case, how do Christian conservatives justify seeking to somehow control the behavior of sinners (homosexuals) via secular laws, which constitutes in punishment (shunning) in the name of their Christian beliefs?
Jesus already lifted that weight from humanity, and gave us all the option to repent for sins (any and all sins) we commit and be rewarded with a life eternal in His Father's house.
To wit, Jesus basically said "we are all sinners, but I lift all punishments executed by man for committing sins", so how do (some) Christians come to believe it their Christian obligation to stop sinners from sinning by using the force of government (man)?
It seems inconsistent.