The "rock" Jesus spoke of was Himself. HE IS THE CHIEF CORNERSTONE..... lots of people mistake this comment IMO. Especially the Catholics and those who believe Peter was the first Pope or some such.
The rock is peters confession “ you are the Christ the son of the living God “ Peter of course means “ rock “ but the founding principle of Christianity is to recognize Jesus is the christ the son of God who all the prophets foretold of his coming and eternal Rule.
“He saith unto them, But
whom 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 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.”
Matthew 16:15-18 KJV
it is This confession that is our foundation
“
Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
…For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith. Who is he that overcometh the world, but
he that believeth that Jesus is the Son of God?”
1 John 5:1, 4-5
that’s what was being revealed the rock of salvstion God had promised had now come who would cause israels fall and the salvation of the nations would come forth
“Sanctify the Lord of hosts himself; and let him be your fear, and let him be your dread. And
he shall be for a sanctuary; but for a stone of stumbling and for a rock of offence to both the houses of Israel, for a gin and for a snare to the inhabitants of Jerusalem.
And many among them shall stumble, and fall, and be broken, and be snared, and be taken.”
Isaiah 8:13-15 KJV
“Wherefore also it is contained in the scripture,
Behold, I lay in Sion a chief corner stone, elect, precious: and he that believeth on him shall not be confounded.
Unto
you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner, And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also
they were appointed.”
1 Peter 2:6-8 KJV
there is a theme in scripture of God laying a precious stone in Jerusalem because they would reject him he became a stumbling stone and an offense to Israel. Taking the kingdom from them
“Having yet therefore one son,
his wellbeloved, he sent him also last unto them, saying, They will reverence my son. But those husbandmen said among themselves, This is the heir; come, let us kill him, and the inheritance shall be ours. And they took him, and killed him, and cast him out of the vineyard.
What shall therefore the Lord of the vineyard do?
he will come and destroy the husbandmen, and will give the vineyard unto others.
And have ye not read this scripture;
The stone which the builders rejected is become the head of the corner: This was the Lord's doing, and it is marvellous in our eyes?”
Mark 12:6-11 KJV
“
The stone which the builders refused is become the head stone of the corner. This is the Lord's doing; it is marvellous in our eyes.
This is the day which the Lord hath made; we will rejoice and be glad in it. Save now, I beseech thee, O Lord: O Lord, I beseech thee, send now prosperity.
Blessed be he that cometh in the name of the Lord: we have blessed you out of the house of the Lord. God is the Lord, which hath shewed us light: bind the sacrifice with cords, even unto the horns of the altar. O
give thanks unto the Lord; for he is good: for his mercy endureth for ever.”
Psalm 118:22-27, 29 KJV
it recurs again and again Christ is the rock be faith in him is our rock believing that he is the Christ the son of God who is the Lord !!!