“And Jesus said to him “you are a pebble”.”
Actually, no. That’s a common false argument among some Protestants. Protestants have come up with various ways to explain away Matthew 16. Look up the old Abingdon Bible Commentary from the early 1960s. I couldn’t believe it when I first heard about this so I actually bought a copy in the late 1990s to check. I regret having given it away when I moved. The Protestant editors simply claimed that the whole “Peter you are Rock” episode was interpolated into the text by Catholics. That’s how they got around the problem of a “too Catholic” sounding interpretation of Matthew 16. They simply said it wasn’t really part of the Bible! I kid you not.
I guess the urge for Protestant anti-Catholics to lie is just something they can’t overcome.
You need to understand. I don’t care what Protestants think or teach or believe. It’s the original Greek I go to and there I find that Jesus called Peter a pebble, something a man can pick up a toss. Jesus said He would build His ekklesia on a solid rock such as protrudes from a cliff which cannot be moved.