I have said it but a few times, it needs to be said a thousand times more...to counter all the false "the Roman Catholic Church is the original church" claims we are constantly flooded with around here. You've got it backwards, it is YOU...and "salvation," et al, that need to come up with something original.
How about the silly pictures of cereal boxes, LOL!
All of the protestant denominations are offshoots of the Catholic Church. Regardless of whether they claim to represent the true interpretation of the Bible, they do not have a historical link to the early church other than through the Catholic Church. During the early centuries, they did not exist side-by-side with the Catholic Church; the Gnostics were not proto-protestants.