Judaism is the only religion that I know of that doesn't proselytize. The first time you approach someone, say a Rabbi and say I want to convert, the prescribed answer is no, ditto the second time. You are required to request studying to convert three times minimum before you are allowed to begin. Then it is a long studious road to actually becoming a convert. You or anyone else is always welcome to participate in Jewish life by just showing up and being amongst us (do I have to say I am one?), most of us believe the sin of Sodom and Gomorrah was not sexual but the in-hospitality to the strangers.