They say, “Well, of course, everyone’s welcome ... just as soon as they get their beliefs straightened out”—which, translated, generally means: “just as soon as they promise to believe all the things we believe, to hate all the things we hate, and to exclude all the people we exclude.”
I’m not quite sure how to put this, but no matter how systematic your theology is, that’s not Jesus. And this is what I think Jesus is getting at when he starts talking about those who hate the light, who love darkness because their deeds are evil.