Matthew 18:17, Matthew 16:18. You are probably thinking of the word "bible" which does not appear in scripture.
This is precisely what I was getting at. The RCC has no idea what the Book actually says. Check Acts 19:32 (the Ephesus riot) wherein Luke reports that the "ekklasia" was in confusion. That is the word which you claim is the basis for the RCC (which I suspect is actually a mob like Ephesus). But, the Roman organization has morphed "ekklasia" into "Church" (from Kirk), and thus fashioned ecclesiastic, ecclesiology, etc. Check your own references and lexicons to see if this is not so.
I repeat, there is no such word as "Church" in the Scriptures, but the term "popular assembly" or "congregation" has been twisted by Rome to justify its self-appointed, self-aggrandizing, monster of an organization. And, should you notice I Cor. 11:16 wherein the "ekklasia" has become plural, "ekklasiai", "assemblies" all over the world...not one "ekklasia", you will find that these gatherings were independent congregations of believers each given the tasks of understanding the Gospel and teaching it to those who would listen.
This history flies in the face of Rome's monolithic giant, central headquarters, singularly pronounced doctrines from hell.