Mycroft
Ministry of Serendipity
That's all very well, but in discussions like this we regularly see homosexuality, an orientation, bracketed together with bad behaviours ranging from stealing and gluttony right through to rape and paedophilia.
I still haven't seen a coherent explanation of why a sexual orientation is a sin anyway. Surely a "sin" implies a conscious decision to do something bad. Being gay isn't a conscious decision.
It's a sin because the people who wrote the Bible came from a very 'alpha male' culture and society. Israel was, at that time, a very isolated, illiterate and backward part of the world (which makes you wonder why jesus ever went there instead of China or Greece where they could already evaluate evidence and had sciences...). Men were the First Class Citizens and Women the Second Class (this is why god is a 'he'). So for two men to be boffing each other behind the bike sheds was quickly seen to be an affront to that established morality.
Had all of the events of the bible happened in Greece, I very much doubt homosexuality would be regarded as a sin in any way (by nature or by acts thereof) since homosexuality was quite a normal thing to that culture and, even, embraced.
Quite simply much of the bible is now outdated for the times and culture we live in. It was fine when it was written, it conformed to the values of the culture for whom it was written, but is not appropriate or relevant to the values of our modern western culture.