First of all, the synoptic gospels were not necessarily written in their entirety by Mark, Matthew, or Luke. Nobody knows for sure who wrote the gospels. In some cases, differences in style and wording indicate multiple authors of a single book.
One of the problems with ancient Greek texts is that when they were copied, no marks of punctuation were used, no distinction made between lowercase and uppercase letters, and no spaces used to separate words. This kind of continuous writing is called scriptuo continua, and it obviously could make it difficult at times to read, let alone understand, a text. The words godisnowhere could mean quite different things to a theist (God is now here) and an atheist (God is nowhere); and what would it mean to say lastnightatdinnerisawabundanceonthetable? Was this a normal or a supernatural event?
No,no, no, speculation is all that you are presenting here with distorted opinions guessing from afar of what actually took place in Catholic Church history, from which the bible is canonized as Inspired of God.
What the Friend and your view neglect to reveal and understand is that no new testament existed nor did any canon of scripture was ever confirmed by either Jew or Christian in the first century.
What dictated the new testament letters came from what Jesus already revealed and from what the original apostles were already practicing and orally preaching as Christians before anything got written down by the eye witnesses (apostles).
Sacred Tradition handed down from the original apostles were already in practice before the letters of the new testament were sent out to the Church communities. The new testament was written for the Christian Converts from Jews and Gentiles who made up the Church.
The practices of the Catholic Christian faith we have today are the same ones the Catholic Church practiced since the original apostles handed them down to the Church both orally and by Sacred Tradition.
The new testament came later, which confirmed the Christian faith and practices from the original apostles.
The simple equation for you and the Friend is; remove the new testament all together today, and it removes your speculation and opinions of grammar and languages. What you have left standing is living proof from what has been practiced and believed in by all Christians in the Catholic faith for over 2000 years from Jesus and His apostles.
How do you discount a 2000 year old practiced faith in the Catholic Church, that is supported and revealed from sacred Scripture which comes after the Church.
It is from the pillar and foundation of Truth which is the Church according to holy writ. Who gave us the bible we have today.
You see, your false view does not hold up to Sacred Apostolic Tradition which predates the letters of the Apostles.
All was already revealed by God to the Apostles who handed down the revelations UNCHANGED to the Catholic Church today, which included the Trinity before the gospels record the historical event of Jesus commissioning the apostles to baptize in the name of the Trinity. This is sacred Tradition before it gets recorded in a letter and sent out to the other Church’s.
Your view pretends to falsify the Word of God was changed, when Sacred Tradition has never changed, thus the gospels or the bible has not changed, which gives witness to the revelations of God from the sacred Traditions which is practiced unchanged in the Catholic Church since apostolic times.
In short, your view is in error, the 2000 year old Catholic Faith is never based on a book. The Catholic faith and practices were already in practice before the new testament was written and sent to the Christians communities for the Christians to practice their liturgies in absence of an apostle. So they were given an infallible letter revealed and inspired of God as Truth and Truth does not change, nor can anyone change Truth.
Your view is lacking the whole Truth, without the Oral Tradition, the Sacred (practiced) Tradition attached to the Sacred Scriptures from the eyewitness living accounts by the apostles who hand them all down from their unity as one body unchanged.
Speculation on grammar and languages and transcriptions never discounts from what is already believed in and practiced before it was written. This means that you would have to prove that Jesus never lived, the apostles never lived, baptism was never practiced, nor was the Trinity ever believed before changing the bible.
Peace be with you