So I’m a UCCer, and while I can’t speak for all UCCers (we’re a congregational denomination, which means that we pretty much let everyone decide for themselves what they believe), I can speak on what I believe, which comes from my experience in many UCC congregations.
First of all, it’s impossible to understand how progressive Christians understand what the Bible says about LGBT people without understanding how we read the Bible. Whereas conservative Christians often view the Bible as “infallible”, progressive Christians do not. Conservative Christians will sometimes even go so far as to say that God literally dictated the words of the Bible to the people who wrote it (this is called “plenary inspiration”).
On the other hand, most progressive Christians tend to accept that the Bible is the product of a couple hundred of years of writings that built upon each other, from multiple authors and multiple time periods, pretty much in agreement with most Biblical scholars. Indeed, the Bible comes with loads of cultural and societal biases that we have to read and sift through. So while conservative Christians refer to the Bible as the “Word of God”, progressive Christians take the lead of theologian Karl Barth and say that Jesus and his example is the “Word” of God, and the Bible points us to him.
Unfortunately, this is a hard viewpoint to articulate, and it’s way more difficult to express in bumper sticker terms than the conservative viewpoint. But because we understand that the Bible is not an infallible document, we also understand that prohibitions on LGBT people are culturally-situated, and that we can learn from human experience that discrimination against LGBT people is, well, wrong. This may or may not come from the scripture, but the command to love our neighbor is, and because we believe in the continuing work of the Holy Spirit, we believe that we always need to keep ourselves open to learning more about who our neighbors are, and what it means to love them.
You see, we don’t usually read the Bible as some kind of book of laws; it’s a story (or really, a collection of stories) about God and humanity and how we relate to each other. And because we believe in the story, we believe that we are constantly challenged to learn about people in whom God might be revealed, and that includes LGBT people and other marginalized groups. God, after all, was not made human in a rich king but as an impoverished peasant born into an oppressed and conquered people. If we take that seriously, and the teachings of Jesus seriously, then we can’t possibly ignore the struggles and oppression faced by LGBT people.
So while there are certainly no passages in the Bible that will say, “Being gay is cool”, there are stories that we think apply to this particular situation. Paul’s letters, for example, are consistently concerned with the inclusion of people who the Old Testament (and keep in mind, the OT was at the time the only Bible the early church new) called “unclean” and said that Gentiles did not need to be circumcised to join the fledgling Christian movement. Acts 10 tells us about how Peter had a dream of a sheet coming from heaven filled with unclean animals, and God telling him to “kill and eat” because Peter can no longer call “unclean what God has made clean” and to minister to a Gentile, Cornelius the centurion. We might not take these stories “literally”, but we really do take them seriously and recognize that they, in conjunction with new experiences and understandings, that we should no longer call LGBT people unclean, when God has already made them clean.
This is not a new way of reading scripture, by the way. Take a look at Galatians 4, and pay attention to how Paul reads the Old Testament story of Hagar and Sarah- he calls it an allegory and applies it to his current context, not as literal history.
I admit that there are plenty of Christians who might not like what I just wrote, but the way progressive Christians read the Bible is not new, nor is it out of the mainstream. The UCC might be the most vocal in our support of LGBT people, but the Episcopal Church USA, the Presbyterian Church USA, and the Evangelical Lutheran Church in America aren’t too far behind, and you can’t really get more mainstream Christian than that.