Jewish commentaries do not attribute the wickedness of Sodom to homosexuality. That notion seems to have arisen elsewhere, based on the failed attempt of the Sodomites to kidnap Lot’s out-of-town guests. But even if the Sodomites had been inclined to homosexuality, the point of the biblical story is that they wished to practice it violently and without consent. In other words, they didn’t want to love their fellows, but rather to rape them. For this reason the writer Jay Michaelson once said that reading the story of Sodom as being about homosexuality is like reading the story of an axe murderer being about an axe. Homosexuality wasn’t the sin; rather, it was the cruel oppression of the other.
That Lot and his daughters were the only ones spared from the city’s destruction does not owe to the fact that they were the only straight people in Sodom. They were saved because they were the ones in the city who welcomed the stranger and protected the foreigner. That is the overarching moral of a story which is, after all, bound up in a Hebrew bible which commands: “You shall not oppress the stranger” and “You shall love your neighbor as yourself.”