I tried to respond to this several times over the past few days, but crashed before I could post my responses.
Discussing this in a GQ context, let’s say that:
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There is no condemnation of “homosexuality” in the Bible, for the very good reason that it’s a concept that postdates all Biblical writings, in the sense of its being a sexual orientation. Using the term to reference solely sexual acts is IMO a solecistic if common misappropriation of a word. A hustler who has sex with men for pay but who is principally attracted to women is not homosexual; a virgin man with religious scruples preventing him from having sex with the men he is attracted to, is.
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Except for the Romans 1 passage, the prohibitory passages all make reference to acts, not attitude or orientation.
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It’s important to note two antithetical points and hold them in the proper tension: A. The near-unanimous traditional understanding of the passages holds that the acts themselves are sinful, and, with Romans 1, are indicative of a carnal, sinful disposition. B. Every single passage can very reasonably be construed as addressing something other than a consensual, committed loving sexual relationship. Exegesis of all of them has been done in Great Debates several times over the past few years.
For example, Leviticus prohibits carnal knowledge of man by man, not necessarily because God has a major hangup with it, but as part and parcel of common Canaanite sexual practices prohibited to the Children of Israel. There is quite a bit of evidence that same-sex intercourse as a part of Ba’alist fertility rites is what was being addressed. The passages in First Corinthians can easily be read as condemning the boy prostitution industry for which Corinth was notorious. The Romans passage, one of the strongest condemnations and the only one addressing internal thought and feeling as opposed to overt acts, may well have referenced either a recrudescence of fertility rites in cosmopolitan Rome or the behavior of the Roman elite, who were known to have turned from “normal” heterosexual sex to same-sex practices in an ennui-laden quest for new kicks. And so on.
With regard to the “sin of Sodom,” it’s significant to note that the story alludes to the gang rape of angels disguised as handsome young men, that it was after God informed Abraham that He was condemning Sodom for abominable behavior of unspecified sorts, and that Ezekiel 16:49-50 specifies that selfish, uncaring attitude and luxury were the abomination for which Sodom was condemned. This is borne out by passages in Isaiah and Jeremiah alluding to Sodom and by Jesus’s condemnation of the Lake Cities, which He parallels to Sodom, not because they were notorious for homosexual practice, but because they refused to repent when their selfish luxury and refusal to care for the poor were condemned by His disciples.
One needs also to note that the modern legal use of fornication, adultery, and sodomy does not define the Biblical sins. A couple committed in as close to marriage as they are legally permitted to engage in, does not commit fornication when they engage in sex; it is the “one night stand” and gratification of lust in casual sex that fornication defines, not the legal-oriented use of “sex outside marriage.”
Within a context in which sex is the procreative and unitive bond in heterosexual marriage, as most Christian moral theologians tend to view it, homosexual activity is ipso facto sinful. But many modern theologians do not take that perspective, and it must be said that that perspective is based on interpretation of the Scriptural passages, not necessarily what they meant in the original context, even though that is the traditional interpretation.
(Please note that this is an effort at a balanced GQ explanation of the answer to the OP, not a polemic setting forth my personal views with justification for them, as I would put in GD.)