It seems to me, if I were an alien from another planet who landed on earth, and was considering the Christian Faith, I would start out looking at whatever Christian Faith claimed to be the One True Faith. Why look at any faith that doesn’t even claim to be True?
But, as I look around, I find only the Catholic Church even being so bold as to even claim this.
(Greek Orthodox, blah blah, certain Anglicans, blah blah, Old Catholics, blah blah - I don’t want to get mired in these ancient topics, but rather discuss those faiths who identify themselves as “protestant,” which are none of the above, but which number in the thousands of churches, but none of which claim to be the One True Faith, AFAIK. I know there are Catholics who are not “Roman” Catholics, but I have not even heard these Faiths express themselves as boldly as to make this claim (they rather claim, “we are also Catholic,” which is true, but not as bold), so they would have probably have evaded detection on my alien sensors.)
My question is: Are there any protestant denominations who seriously claim (in some official capacity) that they are the “One True Church Established by Jesus Christ?” (obviously this would exclude ALL non-Christian churches, so let’s not get into Islam, etc.)
(I don’t mean old Uncle Bob, who was a Baptist, and pointed out that John the Baptist was also a Baptist… I mean a serious claim which they attempt to rationally defend in some official capacity - a published theologian, an official website, or whatever.)
And, for brevity, can we please omit Mormons and Jehovah’s Witnesses? We can debate whether these faiths are “Christian” in other threads (but there “boldness” is not in question here, that’s for sure!)