Our Lord Jesus & Saint Peter both
spoke Aramaic.
And the same word is used:
Cephas ܟܐܦܐ all over the new Testament,
it does not change.
No serious
Greek scholar would agree with you in the difference between petra & petros.
The vast
majority of new Testament scholars hold that,
JESUS called Peter the rock.
Only fanatics in the extreme fringes of Christianity, teach what you preach.
And the
Syriac Orthodox Church declares it.
The Fathers of the Syriac Orthodox Church give a theological interpretation to the primacy of Apostle Peter.
They were fully convinced of the unique office of Peter in the primitive Christian community.
Ephrem,
Aphrahat and
Maruthas who were supposed to have been the best exponents of the early
Syriac tradition unequivocally acknowledge the office of Peter.
The Syriac Fathers, following the rabbinic tradition, call Jesus "Kepha" for they see "rock" in the Old Testament as a messianic Symbol.
When Christ gave his own name "Kepha" to Simon he was giving him participation in the person and office of Christ.
Christ who is the Kepha and shepherd made Simon the chief shepherd in his place and gave him the very name Kepha and said that on Kepha he would build the Church.
Aphrahat shared the common Syriac tradition.
For him Kepha is in fact another name of Jesus, and Simon was given the right to share the name.
The person who receives somebody else's name also obtains the rights of the person who bestows the name.
Aphrahat makes the stone taken from Jordan a type of Peter. He wrote: "Jesus son of Nun set up the stones for a witness in Israel; Jesus our Saviour called Simon Kepha Sarirto and set him as the faithful witness among nations.
Again he wrote in his commentary on
Deuteronomy that
Moses brought forth water from "rock" (Kepha) for the people and Jesus sent Simon Kepha to carry his teachings among nations.
God accepted him and made him the foundation of the Church and called him Kepha.
When he speaks about the transfiguration of Christ he calls him
Simon Peter, the foundation of the Church.
Ephrem also shared the same view.
The Armenian version of
De Virginitate records that
Peter the rock shunned honour.
A
mimro of Efrem found in Holy Week Liturgy points to the importance of Peter.
Both
Aphrahat and
Ephrem represent the authentic tradition of the Syrian Church.
A third party, independently verifies the position of Rome.
And Saint Basil:
Though Peter be a rock, yet he is not a rock as Christ is.
For Christ is the true unmoveable rock of himself, Peter is unmoveable by Christ the rock.
For Jesus doth communicate and impart his dignities, not voiding himself of them, but holding them to himself, bestoweth them also upon others.
He
is the light, and
yet you are the light: he
is the Priest, and
yet he maketh Priests: he is the rock, and
he made a rock.