Have you ever noticed, when speaking of Gay Marriage or Same-Sex Marriage the term “Gay” seems to apply only to male homosexuals? The reference is to the LGBT community – indicating that there are three types of non-heterosexual, or non-birth-gender consistent, ways to be sexually identified: Lesbian, gay, bi-sexual, transgender.
"Saint Paul's Joke" points out that there is NO biblical basis for being anti-gay ... the only laws (Leviticus etc) involve males ... and then only when they are bi-sexual. There are NO laws dealing with females and therefore nothing against homosexuality.
So "abominations" are mentioned in New Testament texts, but they refer to Old Testament Laws, and also carry the admonition that, if you adopt any of the old laws you MUST adopt ALL of them.
Jesus and Peter spoke to the circumcised Israelites & Hebrews, Paul spoke to the Gentiles. Paul mandated that new convert males be exempted from circumcision -- but also that they obey ALL the Laws.
Gentiles couldn't even criticize a Jew who disobeyed or ignored the laws -- unless they themselves obeyed all 613. Of course, the ultimate form of criticism is anti-Semitism; among other things, among other specific teachings of Jesus, that means the Inquisition condemned all participants – as did the Holocaust and any neo-Nazis movements.
[Note the Vatican studied multiple pre-publication copies of "Saint Paul's Joke" for two months, they added them to archives and Pope decided he was better being a rich man on earth, so he planned his retirement; when book was published he announced it].
To assert a Religious basis for being anti-gay, or anti-gay marriage goes against the western Bible. Those who subscribe to other religions have their own texts, and are strictly bound by those texts. But, in the case of the Koran, the anti-Semitism also applies – to be anti-Semitic is to attack and possibly allow the killing of, a Jew for being a Jew. Jesus, who in the Koran is Isa, was, is, and always will be, a Jew. Thus, any anti-Semitism is actually an attempt to kill Jesus/Isa before he has the chance to come to power.
If we were to exclude Jesus from his Christian status and allow the status of Prophet, as granted by Islam, then Isa could be a separate entity and conform to the Hebrew Messiah. But it remains that anti-Semitism, directed at the Hebrew community (some Arabs are also Semites), is still an attempt to kill the Messiah. Which brings us back to the doctrine of Paul to the Gentiles:
At a time when even the Emperor of Rome publicly married a boy, Paul not only did NOT condemn it, he told his followers that, if they really needed sex, than they had to marry. Thus there is an argument that the New Testament mandates gay weddings if the gay cannot be celibate.