Hello MacD, Here is Catholic read on it.
PETER, AND UPON THIS ROCK I WILL BUILD MY CHURCH
Let’s get down to it. You want to know where the real church is? You want to know why catholics believe that the catholic church is the one true church? Well let’s get started with this and stick to this topic.
First
We start with the keys. Keys in the bible are a symbol of Authority. The jews of the old testament new this extremely well.
The expression “power of the keys” is derived from Christ’s words to St. Peter (in Matthew 16:19). The promise there made finds its explanation in Isaiah 22, in which “the key of the house of David” is conferred upon Eliacim, the son of Helcias, as the symbol of plenary authority in the Kingdom of Juda. Christ by employing this expression clearly designed to signify his intention to confer on St. Peter the supreme authority over His Church. This is very important to understand the meaning of the keys, so read Isaiah 22 for reference and study the parallel between Isaiah and Matthew. Jesus being a Jew new exactly what he was doing when he choose to parallel Isaiah and Matthew.
Now the keys go hand in hand with the changing of Simons name to the Rock.
The New Testament contains five different metaphors for the foundation of the Church (Matt. 16:18, 1 Cor. 3:11, Eph. 2:20, 1 Pet. 2:5–6, Rev. 21:14). One metaphor that has been disputed is Jesus Christ’s calling the apostle Peter “rock”: “You are Peter, and on this rock I will build my Church, and the gates of hell will not prevail against it” (Matt. 16:18).
Some have tried to argue that Jesus did not mean that his Church would be built on Peter but on something else.
Some argue that in this passage there is a minor difference between the Greek term for Peter (Petros) and the term for rock (petra), yet they ignore the obvious explanation: petra, a feminine noun, has simply been modifed to have a masculine ending, since one would not refer to a man (Peter) as feminine. The change in the gender is purely for stylistic reasons.
These critics also neglect the fact that Jesus spoke Aramaic, and, as John 1:42 tells us, in everyday life he actually referred to Peter as Kepha or Cephas (depending on how it is transliterated). It is that term which is then translated into Greek as petros. Thus, what Jesus actually said to Peter in Aramaic was: “You are Kepha and on this very kepha I will build my Church.”
The Church Fathers, those Christians closest to the apostles in time, culture, and theological background, clearly understood that Jesus promised to build the Church on Peter, as the following passages show.
Christ left the adoption of a name for His Church to those whom he
commissioned to teach all nations. Christ called the spiritual society
He established, “My Church” (Mt. xvi, 18), “the Church” (Mt. xviii, 17).
In order to have a distinction between the Church and the Synagogue and
to have a distinguishing name from those embracing Judaic and Gnostic
errors we find St. Ignatius (50-107 A.D.) using the Greek word
“Katholicos” (universal) to describe the universality of the Church
established by Christ. St. Ignatius was appointed Bishop of Antioch by
St.Peter, the Bishop of Rome. It is in his writtings that we find the
word Catholic used for the first time. St. Augustine, when speaking
about the Church of Christ, calls it the Catholic Church 240 times in
his writings.
Don’t forget that St. Ignatius was taught and ordained by John, one of the original 12 and the author of revelation and the Gospel of John.
Thou art Peter; and upon this rock I will build my Church and the gates of hell shall not prevail against her.
Carlan__________________