nobody is saying that old German can't keep their heritage. That's the whole point.
My home church in Lansing STILL has a German service once a month, even though roughly 10 people attend.
This concept doesn't require people to change.
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And as I recall, the apostles had NOTHING starting them off. Listen to what Jesus told the disciples when he sent them out:
9Do not take along any gold or silver or copper in your belts; 10take no bag for the journey, or extra tunic, or sandals or a staff; for the worker is worth his keep. 11"Whatever town or village you enter, search for some worthy person there and stay at his house until you leave.
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What I do know is that the WELS still sticks to her guns on doctrines, many of which do make her seem cold and uninviting if just looked at out of context. Closed communion, for example, and our fellowship doctrines, turn many people off to our churches because that's not the lovey-dovey gospel they want to hear. I know churches where the congregations are as warm as ever to visitors, yet once they realize that they can't just walk up and take communion or that we don't pray with other synods/denominations, they just don't come back.
There's a reason the big megachurches preaching prosperity gospel and "do what feels good" gospel are showing big attendances. It's because rather than preaching the law and gospel in a correct fashion, they're giving the itchy ears exactly what they want to hear.
I'll take a small church attendance with the Truth being preached over a large audience being taken down the path of good intentions any day.