God's laws, from the bible... So I assume slavery, polygamy, marital rape, all of Leviticus are back? Right?
Hmm - makes it a bit tricky since the whole SSM issue isn't referred to.... Hmmm
See the Council of Jerusalem for discussion on provisions of the Levitical Law.
Other than what Paul said about gays (and Paul was just a man, however great he may have ended up) virtually all of the comments in the Bible that are anti homosexual (and just anti homosexual men) come from either Leviticus or Deuteronomy and that hasn't stopped the anti gay hate lobby from proclaiming that "God's Laws" need to be followed. Of course, the vast majority of Bible thumpers have read the Bible from start to finish as little as the people who haven't read the Bible at all, so most Bible Thumpers are also completely unaware of the context of these Biblical Laws.
I understand that Jesus may have also made one anti gay comment (of course, what Jesus said wasn't formally written down until at least 40 years and as much as 100 years after he lived) but Jesus also said "love thy neighbor as thyself" and also made at least one other comment that can be seen as being in favor of gay rights.
Being Jewish I haven't read the New Testament in its entirety and, at most, have read and heard a few passages.