Well, there are all different Protestant interpretations, as well - Lutheran, Calvinist, Anabaptist, Anglican, and Mennonite were the original five, and then of course we have everything that came out of those five, that we have today. Now, each of the original five claimed to have the proper interpretation, but how does one discern
which of the five had it? Since they obviously disagreed with each other on some pretty fundamental issues.
No, since that would require that we assume that the Catholic Church is the one that Christ founded, which Protestants say He did
not.
In this thread, we are to assume that it was
not - that Christ founded one of the Protestant churches; not the Catholic Church. So, the task is to figure out
which one.
Well, we could start by looking at the original five Protestant churches - Lutheran, Calvinist, Mennonite, Anglican, and Anabaptist. (Some would argue that the Mennonite and Anabaptist churches are just slightly different expressions of the same thing, so if you want to reduce the list to four on that basis, then please be my guest.

)
Now, obviously, all four/five of them claim to be the authentic expression of Christās Church. Only one of them can be, which means that at least three of them are not.
So, letās start by discerning which of them are
not, and see if we can arrive at the correct one by a process of elimination.