If you know any GLBT Christians who still have concerns, this whole article should be required reading for you as a friend and for them as a necessity.
One of the Bible stories used to talk about homosexuality is the story of Sodom and Gomorra. Briefly, here is what happened. In Genesis 19, you’ll find the story of two angels visiting Abraham’s brother Lot at his house in Sodom. The men of Sodom gathered, demanding that Lot’s guests be turned over to them to be raped. In that time, rape was a tactic of war, a way to humiliate an enemy. In that region of the world still, hospitality is of the highest value. Lot could not have let his guests be hurt. He offered to give his two virgin daughters to the crowd, but the crowd tried to break down the door instead. The angels blinded the crowd and they couldn't find the door. To assume that homosexuality was the problem here is a gross leap made possible only by a void of cultural understanding.