Consider…
Peter’s commission
[edit] Matthew 16:18-19
Matthew 16:18-19 reads, “And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.” This evidence of Peter’s leadership role among the apostles does not appear in the parallel gospel accounts and interrupts the natural flow of the passage. It is doubtful Jesus would have used “church” to refer to Christianity, since it did not yet exist, and in fact the only other verse in the gospels where the word is used is in Matthew 18:17, itself a likely interpolation. Additionally, the phrase “gates of hell” appears nowhere else in the Bible.
This is not scholarship, This is just opinion based on a false premise. Peter’s leadership role is also discussed in Luke 22: where Jesus tells them about leadership and then tells Peter to lead…
24 Then an argument broke out among them about which of them should be regarded as the greatest.
25 He said to them, "The kings of the Gentiles lord it over them and those in authority over them are addressed as ‘Benefactors’;
26 but among you it shall not be so. Rather, let the greatest among you be as the youngest, and the leader as the servant.
27 For who is greater: the one seated at table or the one who serves? Is it not the one seated at table? I am among you as the one who serves.
28 It is you who have stood by me in my trials;
29 and I confer a kingdom on you, just as my Father has conferred one on me,
30 that you may eat and drink at my table in my kingdom; and you will sit on thrones judging the twelve tribes of Israel.
31 “Simon, Simon, behold Satan has demanded to sift all of you like wheat,
32 but I have prayed that your own faith may not fail; and once you have turned back, you must strengthen your brothers.”
and in John 21: where the Risen Jesus, the good shepherd, tells Peter to tend his flock.
15 When they had finished breakfast, Jesus said to Simon Peter, “Simon, son of John, do you love me more than these?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Feed my lambs.”
16 He then said to him a second time, “Simon, son of John, do you love me?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Tend my sheep.”
17 He said to him the third time, “Simon, son of John, do you love me?” Peter was distressed that he had said to him a third time, “Do you love me?” and he said to him, “Lord, you know everything; you know that I love you.” (Jesus) said to him, "Feed my sheep.
If you really were going to prove your point, you would have gotten the oldest know versions of Matthew’s Gospel and see whether it included these passages. You would find, however, that it did. Not only that, but you would find that all of the handwritten copies of Matthew’s Gospel that are left from antiquity are in great agreement on the text. This is well documented - google:“discrepancies in new testament manuscripts” and you will see dozens of references saying that the manuscripts from antiquity are in 99.5% agreement , with virtually all the discrepancies being spelling or word order. - (i.e., copying errors).
By the way, who were you quoting? You should give references. Was it JD Crosnan? We’ve already discussed his bias and lack of scholarship…