Yes most Western Church Fathers (havent read the east), regard the CC as the true Church and the rest as heresies which at best contains fragments of truth...
So darceri: Are the gnostics, the nestorians, the arians etc etc part of this mytical insvisible church.
And as christ being the rock in mat 16:18 is false
Mark 3:16; John 1:42 –
Jesus renames Simon "Kepha" in Aramaic which literally means "rock." This was an extraordinary thing for Jesus to do, because "rock" was not even a name in Jesus' time. Jesus did this, not to give Simon a strange name, but to identify his new status among the apostles.
When God changes a person's name, He changes their status.
Gen. 17:5; 32:28; 2 Kings 23:34; Acts 9:4; 13:9 - for example, in these verses, we see that
God changes the following people's names and, as a result, they become special agents of God: Abram to Abraham; Jacob to Israel, Eliakim to Jehoiakim, Saul to Paul
Matt. 16:18 -
Jesus said in Aramaic, you are "Kepha" and on this "Kepha" I will build my Church. In Aramaic, "kepha" means a massive stone, and "evna" means little pebble. Some non-Catholics argue that, because the Greek word for rock is "petra", that "Petros" actually means "a small rock", and therefore Jesus was attempting to diminish Peter right after blessing him by calling him a small rock. Not only is this nonsensical in the context of Jesus' blessing of Peter, Jesus was speaking Aramaic and used "Kepha," not "evna."
Using Petros to translate Kepha was done simply to reflect the masculine noun of Peter.
Moreover,
if the translator wanted to identify Peter as the "small rock," he would have used "lithos" which means a little pebble in Greek. Also, Petros and petra were synonyms at the time the Gospel was written, so any attempt to distinguish the two words is inconsequential. Thus, Jesus called Peter the massive rock, not the little pebble, on which He would build the Church. (You don’t even need Matt. 16:18 to prove Peter is the rock because Jesus renamed Simon “rock” in Mark 3:16 and John 1:42!).
Matt. 16:17 - to further demonstrate that Jesus was speaking Aramaic, Jesus says Simon "Bar-Jona." The use of "Bar-Jona" proves that Jesus was speaking Aramaic. In Aramaic, "Bar" means son, and "Jonah" means John or dove (Holy Spirit). See Matt. 27:46 and Mark 15:34 which give another example of Jesus speaking Aramaic as He utters in rabbinical fashion the first verse of Psalm 22 declaring that He is the Christ, the Messiah.
This shows that Jesus was indeed speaking Aramaic, as the Jewish people did at that time.
Matt. 16:18 - also, in quoting "on this rock," the Scriptures use the Greek construction "tautee tee" which means on "this" rock; on "this same" rock; or on "this very" rock. "Tautee tee" is a demonstrative construction in Greek, pointing to Peter, the subject of the sentence (and not his confession of faith as some non-Catholics argue) as the very rock on which Jesus builds His Church. The demonstrative (“tautee”

generally refers to its closest antecedent (“Petros”

. Also, there is no place in Scripture where “faith” is equated with “rock.”
Matt. 16:18-19 -
in addition, to argue that Jesus first blesses Peter for having received divine revelation from the Father, then diminishes him by calling him a small pebble, and then builds him up again by giving him the keys to the kingdom of heaven is entirely illogical, and a gross manipulation of the text to avoid the truth of Peter's leadership in the Church. This is a three-fold blessing of Peter - you are blessed, you are the rock on which I will build my Church, and you will receive the keys to the kingdom of heaven (
not you are blessed for receiving Revelation, but you are still an insignificant little pebble, and yet I am going to give you the keys to the kingdom).
Matt. 16:18-19 – to further rebut the Protestant argument that Jesus was speaking about Peter’s confession of faith (not Peter himself) based on the revelation he received, the verses are clear that Jesus, after acknowledging Peter’s receipt of divine revelation, turns the whole discourse to the person of Peter:
Blessed are “you” Simon, for flesh and blood has not revealed this to “you,” and I tell “you,” “you” are Peter, and on this rock I will build my Church. I will give “you” the keys to the kingdom, and whatever “you” bind and loose on earth will be bound and loosed in heaven. Jesus’ whole discourse relates to the person of Peter, not his confession of faith.
Matt. 16:17 -
to further rebut the notion that Jesus was calling Peter a small pebble, Simon in Aramaic means "grain of sand." If Simon's name meant "grain of sand," it would be pointless for Jesus to change his name from "grain of sand" to "pebble."