Like I said, there are always heretics. And again, even "near-universal" acceptance defeats your ridiculous assertion.
"Like I said, there are always heretics. And again, even "near-universal" acceptance defeats your ridiculous assertion."
Not so. The proliferation of denominations of Christianity since Luther is evidence that my assertion is correct. Every denomination has arisen due to doctrinal differences. I've lost count of the number of denominations now extant.
Minor doctrinal differences are the driving force in the fragmentation of Christianity. It's never the big differences. That leads to other things, like Islam, and Christianity itself. From there, it's the little arguments that lead to the formation of new denominations.
Have you ever attended a Lutheran service in Sweden or Norway? If you did not know, you would think yourself in a Roman Catholic service. It's different here in the USA, of course.
Now we have at least three splinter denominations of Lutheranism, each split off over some disagreement in doctrine. It's most amusing to a student of religions.
It resembles most closely a fractal pattern.
It is not clear how you can argue this point. Go to any church - even a small 100 member Southern Baptist church and you will find that the members beliefs will vary.
They will all agree on the big items like the resurrection of Christ, but their will be very varied beliefs on things such as the proper role of a woman at home, the permissible methods of remarrying (if any) after divorce, and the meaning of the symbolism in the book of Revelations. This is certainly not an exhaustive list.