“But before I answer your post, I would like to say that the source you provided:
-Is Hypocritical. Why? They claim to be “Bible Only” and then proceed to tell the reader what they should believe. The author/s of the site are doing the exact same thing confessional Christians do in looking at Scripture and then interpreting said doctrine.
-Is Intolerant. Based on the venomous tone I suspect they would like to persecute folks who don’t believe exactly as they do.”
If you don’t like the link I provided that is ok...there are many others that confirm the intransigence of both Luther and Calvin. Google it...
Luther and Calvin were both Roman Catholic Priests. Their similarities relate to their intolerance of any religious views other than their own. Luther kept all the trappings of the Roman church in his church, while Calvin stripped the church to bare walls. And so you have it...Lutherans and Prysbeterians, in all of their various hues.
Later in England there were two brothers, both Anglican Priests, the Wesley’s. From them sprang the Methodists, though they themselves continued to be Anglican Priests.
The anabaptists spawned such as Menonites, Amish and of course the various branches of the Baptists.
Nothing like as good ol’ A vs C fight to take the heat off them pesky Catholics!
***Their similarities relate to their intolerance of any religious views other than their own.***
Which ironically exactly is what your source does. Interestingly the source you have choosen to try and prove your point.