Can I insert something here?
I've been to WELS, LCMS and WELS churches - as a non Lutheran.
I can ONLY speak for me, just MY experience. And I think it TOTALLY depends on the particular congregation you're attending, maybe much more than what group it happens to belong to.
Anyway, I sent to a WELS church with my grandfather (a retired WELS pastor) who, when he saw Communion was being offered, told me I was not to participate. Since I knew a bit about the whole "fellowship" thing (I STUDIED Lutheran theology when I was homeschooled, having totally read all of Francis Pieper), so I kinda understood.
I've been to an LCMS church a few times when a good friend of mine (they have an awesome praise team). Anyway, it said to talk to the pastor, and since we got there kinda early, I could. He asked me some questions, I think I can remember 4 of them: What church did I belong to (it's Protestant, not Lutheran), was I sorry for my sins, did I believe that by faith in Christ as my Savior I have forgiveness of sins, and did I believe that Christ is truely present in the Sacrament. I knew what he meant by "present" and although I'm not like 100% sure I totally agree with Lutherans on all that, I consider it valid and I do believe Christ is present in some sense - I answered 'yes.' He responded that the church would be honored or something like that to include me. I told my Dad that and he's only response was it varies hugely in the LCMS but I was right to talk to the pastor first.
When I went to the ELCA church, I asked my girlfriend (the pastor's daughter - we're both PK's) and she said 'sure.' If there was some card to fill out, she didn't say anything about it and she didn't fill out anything.
Because I often go to churches other than my own, I just think it's a totally solid practice to ASK. There's lots of tradition here and I just think that when we are a guest in another church, we need to be respectful of that and not like take it personally.
Just MY experience and feelings about all that.
Sometime, I'd like to discuss this whole thing of Lutherans and Communion.
Keep the faith! Share the love!
Josiah
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