"You shall love (the stranger) as yourself, for you were strangers in the land of Egypt" (Leviticus 19:34).
As a retired pastor who preaches in a different church almost every Sunday, a fun thing I get to do is study the church bulletins (or handouts or worship guides) which everyone receives on entering the building. You can learn a great deal about a church's priorities and personality in five minutes of perusing that sheet.
As an outsider--that is, not a member or regular here--I get to see how first-timers read that material and feel something of the same thing they feel. I become the ultimate mystery shopper for churches. That is not to say that I pass along all my (ahem) insights and conclusions to pastors. Truth be told, most leaders do not welcome judgments from visitors on what they are doing and how they can do it better. So, unless asked, I keep it to myself. And put it in my blog.
Now, in all fairness, most churches are eager to receive newcomers and want them to feel at home and even consider joining. And the worship bulletins reflect that with announcements of after-benediction receptions to meet the pastors, the occasional luncheon for newcomers to learn about the church and get their questions answered, and free materials in the foyer.
Now, surely all the other churches want first-timers to like them and consider joining. No church willingly turns its nose up at newcomers, at least none that I know of. But that is the effect of our misbehavior.
Here are ten ways churches signal newcomers they are not wanted.