There have been a number of supposedly Christian leaders who have come out in favor of same-sex marriage recently. This has really been an on-going phenomenon, but only recently have we seen many from the evangelical camp jumping on the bandwagon to redefine marriage and to claim that homosexuality is not sin.
In most cases, the rationale given for the switch is something about people who have unchangeable same-sex attraction and shouldn't be hated or that Jesus would be more understanding of the desires people have.
The problem with this issue is that nobody takes the time to differentiate between same-sex attraction and same-sex sexual acts. It isn't necessarily a sin to be attracted to the same sex. It can be caused by sin, for sure. People who get into certain kinds of sin will just get deeper and deeper in until it affects their desires more and more to make them want to sin in even more harmful ways. But I do think some people were abused or confused about sexuality and thus have feelings of attraction to the same sex through no fault of their own.
The problem is when people lump the attraction in with the sin of acting on that attraction. Temptation is not sin. Having a feeling of attraction towards someone of the same sex is a temptation. When that thought is indulged in, it becomes lust, which is a sin. When it becomes acted upon in a same-sex act, it is sin. But merely having the attraction is not necessarily sinful.
The homosexual activists have been very clever at trying to remove the distinction between the desire and the action. They call all people who have same-sex attraction "homosexuals" - whether or not they actually engage in homosexual acts. With only one label for the desire and the action, they confuse the issue greatly in several ways.
1) They set up homosexuality as a way of being instead of a temptation to sin. This not-so-subtly encourages people with these attractions to sin because the idea is that if this is the way you are, you should indulge.
2) They pretend that people cannot deny their desires and should not deny them. The idea that someone could have a desire to do something and choose not do it is a foreign concept to them. Even crazier, in their minds, is trying to fight it on a continual basis for a lifetime. Their message is that if you have a desire, you must act on it - it's just who you are.
3) They make homosexuality sound like a special case where the usual rules about morality don't apply. After all, if it's just an in-built desire, how could we so mean as to say that it's wrong or that those people shouldn't be able to "love" like we can? They want it to sound like an exception to Christianity morality that isn't covered in the Bible because people back then didn't understand that some people are just made differently.
4) They cause people to identify with their sin rather than with Christ. Someone saying they are a homosexual is no different than someone saying they are a liar or an adulterer or a thief. But most people don't go around calling themselves these labels or using them to justify their sin. Can you imagine a perpetual liar claiming that being a liar is just who they are and you should accept them that way and not try to change them and that Jesus would be okay with it because they've been that way as long as they can remember? But people do exactly that sort of thing with homosexuality because they have confused the desire with the action and because they call it a "lifestyle" instead of just a sin. In so doing, people indulging a same-sex desire now see their sin as inherent part of them rather than a cancer that will destroy them spiritually.
5) They confuse Christians who might not be very informed on the issue into supporting homosexuality and same-sex marriage. Because same-sex attraction often begins at a fairly young age and because it is very difficult for many with same-sex attraction to eliminate those attractions, many people have believed that it is a "natural" thing that people cannot help. I do think many with same-sex attraction can be helped, but it is difficult and many will continue to struggle in this area. But because people conflate the attraction and the action, their acceptance of a deep-seated attraction in some people that may not be their fault often leads to an acceptance of the actions as being not their fault either - or perhaps not being a fault at all.
Thus, because we have conflated temptation with sinful actions in this area, we have allowed many to become confused and to fail to call sin sin or to uphold Biblical morality.
Of course, such people should have known better. They should have been studying deeper. They should have been distinguishing truth instead of falling for the smoke and mirrors. They should have been standing on what the Bible says instead of giving in to peer pressure and political-correctness. So, yes, they are at fault.
But given the society-wide and cleverly-marketed deception, it's not exactly surprising that so many have believed a lie. We haven't done a good enough job combatting the lies about homosexuality in the culture and now they have wormed their way into so many churches and hearts. We forgot that defending the faith means not only standing firm in our own convictions, but destroying the deceptions that would lead others astray. We have to do better.