Because context matters:
Matthew 16:16 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.
Revelation 3:8 I know thy works: behold, I have set before thee an open door, and no man can shut it: for thou hast a little strength, and hast kept My word, and hast not denied My name.
onoma = a "name" (literally or figuratively) (authority, character)
Jesus didn’t refer to the revelation Peter had received as the rock He just renamed Simon to Petros which literally means rock.
I can give you reasons why I think this, if you wish... but they're going to harm the wise masterbuilder foundation if you try to make these two the same gospel. My reasons have to do with the rock and the authority of Jesus.
It's just a chain of thoughts.
From Birth: The Forever Kingdom
Esaias 9:6
For a child is born to us, and a son is given to us, whose government is upon His shoulder: and His name is called the Messenger of great counsel: for I will bring peace upon the princes, and health to Him. 7 His government shall be great, and of His peace there is no end:
it shall be upon the throne of David, and
upon His Kingdom, to establish it, and to support
it with judgment and with righteousness,
from henceforth and forever.LXX
The Corner Stone
Esaias 28:16 Therefore thus saith the Lord,
even the Lord, Behold,
I lay for the foundations of Sion a costly stone, a choice, a corner-stone, a precious
stone, for its foundations; and he that believes
on him shall by no means be ashamed. 17 And I will cause judgment
to be for hope, and
My compassion shall be for just measures, and ye that trust vainly in falsehood
shall fall: for the storm shall by no means pass by you, 18 except it also take away your covenant of death, and your trust in Hades shall by no means stand:
if the rushing storm should come upon you, ye shall be beaten down by it.
Matthew 7:24 Therefore whosoever heareth
these words of Mine, and doeth them, I will liken him unto a wise man, which
built his house upon a rock: 25 And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock. 26 And every one that heareth these sayings of Mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand: 27
And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it.
Matthew 21:42 Jesus saith unto them, Did ye never read in the scriptures,
The stone which the builders rejected, the same is become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes? 43 Therefore say I unto you,
The Kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof. 44 And
whosoever shall fall on this stone shall be broken: but
on whomsoever it shall fall, it will grind him to powder.
Daniel 2:34 Thou sawest until
a stone was cut out of a mountain without hands, and it smote the image upon its feet of iron and earthenware, and utterly
reduced them to powder.
Water of Repentance
Matthew 3:11
I indeed baptize you with water unto repentance: but He that cometh after me is mightier than I, whose shoes I am not worthy to bear: He shall baptize you with the Holy Ghost, and [with] fire: 12 Whose fan [is] in His hand, and He will throughly purge His floor, and gather His wheat into the garner; but He will burn up the chaff with unquenchable fire.
John 3:5 Jesus answered, Verily, verily, I say unto thee,
Except a man be born of water and [of] the Spirit, he cannot enter into the Kingdom of God.
Eat The Words of Eternal Life
John 1:14 And
the Word was made flesh, and dwelt among us,
John 6:53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye
eat the flesh of the Son of man, and drink His blood, ye have no life in you.
Matthew 4:4 But he answered and said, It is written, Man shall not live by bread alone, but by
every word that proceedeth out of the mouth of God.
John 6:68 Then Simon Peter answered Him, Lord, to whom shall we go?
Thou hast the words of eternal life.
Living Water
Jeremias 17:13 O Lord, the hope of Israel, let all that have left thee be ashamed, let them that have revolted be written on the earth, because they have forsaken the fountain of life, the Lord.
John 2:3 And when they wanted wine, the mother of Jesus saith unto Him, They have no wine. 4 Jesus saith unto her, Woman, what have I to do with thee? Mine hour is not yet come.
John 4:14 But whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.
John 7:38 He that believeth on Me, as the scripture hath said, out of his belly shall flow rivers of living water.
John 13:8 Peter saith unto him, Thou shalt never wash My feet. Jesus answered him, If I wash thee not, thou hast no part with Me.
John 19:34 But one of the soldiers with a spear pierced His side, and forthwith came there out blood and water.
Revelation 22:14 Blessed [are] they that do His commandments, that they may have right to the tree of life, and may enter in through the gates into the city. 17 And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely.
God of the Living
Matthew 22:31 But as touching the resurrection of the dead, have ye not read that which was spoken unto you by God, saying, 32
I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living.
John 5:29 And shall come forth;
they that have done good, unto the resurrection of life; and
they that have done evil, unto the resurrection of damnation.
Revelation 3:1 And unto the angel of the church in Sardis write; These things saith
He that hath the seven Spirits of God, and the seven stars; I know thy works, that thou hast
a name that thou livest, and art dead. 2 Be watchful, and strengthen the things which remain, that are ready to die: for
I have not found thy works perfect before God.
Son of the Living God
Matthew 16:16 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.
Matthew 28:18 And Jesus came and spake unto them, saying,
All authority is given unto Me in Heaven and in Earth. 19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: 20
Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, [even] unto the end of the world. Amen.
Revelation 3:8 I know thy works: behold, I have set before thee an open door, and no man can shut it: for thou hast a little strength, and
hast kept My word, and hast not denied My name(authority).
Jesus is the foundation of His own church.
Jesus words define what His church believes.
Jesus says what His church must do to be whole.
This gospel of the Kingdom of Heaven is of the Father.