Yes! Christ changed his name to Rock which is what Peter means in the original language. Also taking quotes from a letter written before Peter went to Rome does not mean much. The letter was written for the time it was written at least unless for something that stands for all time.
He went to Rome after the letter which is put in the whole New Testament many years after the fact of Both(Peter's whole life and the time it was written.)
But by this logic we can say they never went to the bathroom because it is never fully discussed or written. And if they wrote about it once does that prove everybody did it conclusivel? LOL!!
BUT When We think any little dot and nuance can be figured from the Bible Alone is like this
