Then why did Jesus give Simon the name, “Rock”? To show that Simon would be he to whom all must turn who want to know God’s will. There is a precedent for this in Scripture:
Exodus 18:14 And when Moses’ father in law saw all that he did to the people, he said, What is this thing that thou doest to the people? why sittest thou thyself alone, and all the people stand by thee from morning unto even?15 And Moses said unto his father in law,
Because the people come unto me to enquire of God:
God put Moses in a position of authority over the people. Jesus has done the same thing with Simon. Jesus has appointed Simon as Shepherd over His flock.
King James Version (KJV)
15 So when they had dined, Jesus saith to Simon Peter, Simon, son of Jonas, lovest thou me more than these? He saith unto him, Yea, Lord; thou knowest that I love thee. He saith unto him, Feed my lambs.
Jesus gave Simon His own name, “Rock” or “Peter”.
Matthew 16:18 And I say also unto thee, That thou art Peter,
Jesus, speaking to Simon, names him “Rock”. That is the meaning of the name “Peter”. Heretofore, the only Rock in Scripture has been God. Therefore, Jesus has given Simon, His own name. It means that Simon is now God’s representative upon earth. The rest follows logically.
and upon this rock I will build my church;
Since Peter is Christ’s representative, it is logical that Jesus would organize His Church around St. Peter. This is why we can say that the Church is the Body of Christ. It is Christ’s CORPORATION. St. Peter is the Chief Officer. The Apostles the Board of Directors.
and the gates of hell shall not prevail against it.
Again, because Peter is Christ’s representative, it is logical that the Church will prevail against the gates of hell.
19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
Everything which Peter binds upon earth is bound in heaven. Everything he looses upon earth is loosed in heaven. That is not only infallibility. That is also saving power. God has given the office of Peter awesome power. And all that we can do is sit back and gasp:
8 But when the multitudes saw it, they marvelled, and glorified God, which had given such power unto men.
Yeah! Christ willed the Pope’s teachings Ex cathedra, infallible!