You can’t find Protestants and certainly not Roman Catholicism in the NT. You will find Christianity however.
I’m not talking about the name “Protestant”, obviously that didn’t exist.
I’m talking about Protestant theology. Find me one Church Father who held the same theology as the Reformers. Sola Scriptura, Faith Alone, disbelief in the Real Presence, rejection of sacred hierarchy, rejection of the sacrificial priesthood, rejection of monastic life, rejection of the cult of saints and their feast days.
And I don’t want to see “Well Augustine said X”. No. Not enough. I want you to show me a single person who held ALL OF IT. The whole kit and caboodle of modern Protestantism. Because I’ve seen people quote Augustine up and down on grace and conveniently forget that he was a bishop who offered the Mass, honored the saints, kept their feast days, wrote rules for monastics, ordained priests, etc.
The Christianity of the earliest time period was, in fact, substantially the same as what we now call today the Catholic, Orthodox, and Oriental Churches. No one ever held Protestant theology until much, much later.