I'm not being critical or condemning but rather am trying to figure out your statements in light of the books of the new testament. Do you believe that only the gospels have authority or do you accept the other books of the new testament as authoritative?
I accept the authority of 66 Books, the Whole Bible. Which "Church" a passage is dealing with must be determined from the context where the word "church" is used.
The "church" of the Pauline Epistles is the Body of Christ of the current dispensation. The "church" of Acts 7:38 refers to the congregation, the assembly, of Old Testament Israel. "Church" in at least 115 passages in the New Testament refers to a local visible assembly of born-again Christians. The "church" of Matthew 16, however, is a believing congregation in an earthly, royal, Davidic, and Millennial Kingdom and has keys used for entrance.