Jesus asked, ...”who say ye that I am?”
And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
And Jesus answered and said unto him,
Blessed art thou Simon Bar-jona; for flesh and blood
hath not revealed it unto thee, but My Father which is in heaven.
And I say unto thee, that thou art Petros, and upon this Petra I will build My church; And I will give unto thee the keys to 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.”
The context of these scriptures weren't about Peter, they were about Christ and who He was and is.
Christ wasn't saying that He would build His church on the shaky sinful man, Peter. He was saying that He would build His church on the bedrock truth that He is the Christ, the Son the living God. This truth was given to Peter by divine revelation.
Simon Bar-jona, who Christ only a few verses later called Satan, and who also denied Christ three times, an act of cowardice, did later become a great man of faith and was used of God mightily. But Christ did not build a church on him.
Christ's church is built on Himself, His person, and His finished work on the cross. If someone were to tell Peter that Christ had built His church on him, that rough old two fisted fisherman would smack them in the mouth.
An omniscient, omnipresent, Holy God, doesn't rely on, or build anything on sinful man.
The keys of the kingdom are the Gospel of Christ, “The Good News”, for this is what saves mens souls.
The Gospel is: That Christ died on the cross under the penalty of our sins, He was buried, and He rose again on the third day.
It's a sad thing to watch someone prostituting their intellect to deny something that is manifestly obvious.
AMEN, AMEN, AND AMEN!