‘You are Peter and upon this rock I shall build my Church and the gates of Hell shall not prevail against it.’ For the Church cannot be moved because it is known to have been founded on that most solid rock, namely, Christ the Lord.
Mathew 16
18 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.
Yes, Peter confessed the faith, but it was also Peter who gave the great sermon on the day of Pentecost in which three thousand souls were added to the Church.
Just because the Catholic`s call Peter the rock does not mean it is not so.
Actually, Cephas is just a different way to spell Kefas with the English alphabet.
As used in the New Testament, it is simply the transliteration of the Hebrew word "kefa."
Kefas only appears twice in the Hebrew Scriptures. It refers to a special kind of stone. It is not the same terms that are used to Figuratively speak of the characteristics of God. The Hebrew lexicons give the meaning "holow rock," FWIW.
The problem is in the English where the words *petra* and *petros* are both translated to the same English word.
In the Greek they are different words and denote different objects.
But Catholics never seem to want to address the Greek.