That day will never arrive. The process of sanctification will never bring two Protestants of different persuasions (Armenian and Calvinist, for example) together on doctrine.
In addition, there can be misperception of the part of the receiver. Ultimately, if you say "why should I believe you over a Methodist?", I agree, maybe you cannot know. All I can do is put up my beliefs against what the Bible says, and let the other denominations speak for themselves. :)
OR, you can accept an authority outside of yourself and realize that Christ left an authoritative group of men called "apostles" who passed on their authority to succeeding generations of men. Christianity is a revealed religion, not one based on our own private thoughts and interpretations. God has given to us through other men the Gospel.
Regards
That day will never arrive. The process of sanctification will never bring two Protestants of different persuasions (Armenian and Calvinist, for example) together on doctrine.
You are right that Protestants will never agree completely on everything. And yes, there are important differences on such things as even salvation, so I cannot sugarcoat that. However, there are quite a number of "Bible-believing" churches, which have much in common. So, the sanctification process never ends in the same place for any two of us. Does it with any two of you?
Christianity is a revealed religion, not one based on our own private thoughts and interpretations.
LOL! I'm laughing because I am very confident that we both deeply and honestly believe this is the absolute truth, and yet look at us ... :)