"And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it" Mat 16:18
How do Protestants explain the continuity of the Church as promised to Peter (and the disciples, presumably), that "the gates of Hell will not overcome it", when the Church seems to have faced a serious rupture, assuming the various Protestant sects are true. What kind of continuity does Luther or Calvin have with Thomas Aquinas or Anselm, for instance? Were people in the middle ages saved through the sacraments of the Church and their faith, such as they had it? If so, why the need for schism?
Jesus was not talking about Peter being that rock, but about what he had said which was not revealed by flesh & blood as if he had come up with this to be mistaken as so rewarded for saying so since the revelation came from the Father instead.
Matthew 16:15 He saith unto them, But whom say ye that I am? 16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. 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.
It was upon that revelation from the Father that Jesus said that the gates of hell shall not prevail against it, and He did it ! After His resurrection, He got the keys to hell and death.
Revelation 1:17 And when I saw him, I fell at his feet as dead. And he laid his right hand upon me, saying unto me, Fear not; I am the first and the last: 18 I am he that liveth, and was dead; and, behold,
I am alive for evermore, Amen; and have the keys of hell and of death.
How do we know that Jesus was expounding on what was revealed to Peter from the Father instead of on Peter?
#1: The reference to rock in the O.T. has always been referred to deity.
https://www.biblegateway.com/quicksearch/?quicksearch=rock+God&qs_version=KJV
Only one reference in the N.T. confirms that Jesus was referring on what Peter had said.
1 Corinthians 10:4And did all drink the same spiritual drink: for they drank of that spiritual
Rock that followed them: and that
Rock was
Christ.
#2. Right after that proclamation by Jesus, Peter was overcome by Satan as proof that Jesus was not talking about Peter in citing that rock.
Matthew 16:20 Then charged he his disciples that they should tell no man that he was Jesus the Christ. 21 From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day. 22 Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee. 23 But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men.
The problem is that readers that had misread Jesus words, also misread verse 19 as if that was given to Peter only.
Matthew 16:19 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.
Verse 20 included to see that He was addressing all of His disciples on this matter. He did it again elsewhere where this blessing of binding and loosing was on all the believers that are His disciples.
Matthew 18: 18 Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven. 19 Again I say unto you, That if two of you shall agree on earth as touching any thing that they shall ask, it shall be done for them of my Father which is in heaven. 20 For where two or three are gathered together in my name, there am I in the midst of them.
So the keys of the kingdom of heaven is based on believing that revelation from the Father that was given through Peter, and all those that believe that revelation has those keys as long as they are abiding in Him & His words as His disciples by His grace & by His help.