“The oldest surviving complete text of the New Testament is the Codex Sinaiticus, dating back to the middle of the fourth century. The oldest fragments, the Bodmer and Beatty Papyri and Papyrus 52, date back to the second century but only contain bits of the Gospel of John. All of these texts are Greek.
Jesus's native tongue was Aramaic, and even if he knew Greek, he certainly did not speak it to his apostles, many of whom were uneducated fishermen. Without any surviving Aramaic texts, the actual words of christ are lost forever, mired in a sea of subjective translation by ancient scribes.
There are three hundred years between the composition of a text and our surviving copies. In a world without a printing press, texts would often undergo drastic evolution through centuries of handwritten duplication.
Our four canonical gospels did not begin their lives as the gospels of "Matthew," "Mark," "Luke" and "John." Different groups of early Christians maintained their own oral traditions of Jesus's wisdom, as writing was a specialized skill and not every fellowship enjoyed the services of a scribe. When written accounts of Jesus's teachings began to circulate (i.e., the theoretical "sayings" gospel Q and the Semeia or Signs source), the independent groups WOULD SUPPLEMENT THEM WITH THEIR OWN TRADITIONS about the savior, each believing their own versions to be "the Gospel." Eventually, as these expanded writings spread through other communities, some versions were viewed as having more authority than others. It was not until the pronouncement of Bishop Irenus (185 C.E.) that Christians began to accept only the four familiar gospels as authoritative, and to refer to them by their modern titles.
The rest of the canon was much slower to develop. For the next two centuries, the four gospels would be coupled with a myriad of different letters, epistles, stories and apocalypses, according to what a particular congregation JUDGED AS RELEVANT TO THEIR UNDERSTANDING of Jesus Christ and his message. Catholicism was only one of the dozens of "denominations" within the early church—Gnosticism was prevalent throughout Egypt, Montanism in Asia Minor, Marcionism in Syria.
Eventually, the Catholic church was adopted as the state religion of the Roman Empire, and all other systems of belief were branded as heresies. Following the Epistle of Athanasius in 367 C.E., the Church finally reached agreement upon which writings were truly authentic and representative of apostolic tradition, thus forming what we know today as the canonical New Testament. Although factions of the Church continued to debate the merits of various books for centuries, and many even used other writings in their liturgy, most uncanonical writings were ordered to be destroyed. In many cases, possession of heretical literature was punishable by death.”
"the Roman Catholic Church herself admits to the forgery of the Holy Scriptures. The Catholic Encyclopedia, Volume 6, page 136, gives us this admission.
"Substitution of false documents and tampering with genuine ones was quite a trade in the Middle Ages. Innocent III (1198) points out nine species of forgery [of ecclesiastical records] which had come under his notice.
But such frauds of the Church were not confined to the Middle Ages; they begin even with the beginning of the Church and infest every period of its history for fifteen hundred years and defile nearly every document, both of "Scriptures" and of Church aggrandizement. As truly said by Collins, in his celebrated Discourse of Free Thinking:
"In Short, these frauds are very common in all books which are published by priests or priestly men... For it is certain they may plead the authority of the Fathers for Forgery, Corruption and mangling of Authors, with more reason than for any of their Articles of Faith.."(p.96.)"
"Modern-day versions of the Gospel of Luke have a staggering 10,000 more words than the same Gospel in the Sinai Bible. Six of those words say of Jesus "and was carried up into heaven", but this narrative does not appear in any of the oldest Gospels of Luke available today ("Three Early Doctrinal Modifications of the Text of the Gospels", F. C. Conybeare, The Hibbert Journal, London, vol. 1, no. 1, Oct 1902, pp. 96-113). Ancient versions do not verify modern-day accounts of an ascension of Jesus Christ, and this falsification clearly indicates an intention to deceive.
Today, the Gospel of Luke is the longest of the canonical Gospels because it now includes "The Great Insertion", an extraordinary 15th-century addition totalling around 8,500 words (Luke 9:51-18:14). The insertion of these forgeries into that Gospel bewilders modern Christian analysts, and of them the Church said: "The character of these passages makes it dangerous to draw inferences" (Catholic Encyclopedia, Pecci ed., vol. ii, p. 407).
Just as remarkable, the oldest Gospels of Luke omit all verses from 6:45 to 8:26, known in priesthood circles as "The Great Omission", a total of 1,547 words. In today's versions, that hole has been "plugged up" with passages plagiarised from other Gospels. Dr Tischendorf found that three paragraphs in newer versions of the Gospel of Luke's version of the Last Supper appeared in the 15th century, but the Church still passes its Gospels off as the unadulterated "word of God" ("Are Our Gospels Genuine or Not?", op. cit.)"
"The Church itself admits that it does not know who wrote its Gospels and Epistles, confessing that all 27 New Testament writings began life anonymously:
"It thus appears that the present titles of the Gospels are not traceable to the evangelists themselves ... they [the New Testament collection] are supplied with titles which, however ancient, do not go back to the respective authors of those writings." (Catholic Encyclopedia, Farley ed., vol. vi, pp. 655-6)
The Church maintains that "the titles of our Gospels were not intended to indicate authorship", adding that "the headings ... were affixed to them" (Catholic Encyclopedia, Farley ed., vol. i, p. 117, vol. vi, pp. 655, 656). Therefore they are not Gospels written "according to Matthew, Mark, Luke or John", as publicly stated. The full force of this confession reveals that there are no genuine apostolic Gospels, and that the Church's shadowy writings today embody the very ground and pillar of Christian foundations and faith. The consequences are fatal to the pretence of Divine origin of the entire New Testament and expose Christian texts as having no special authority. For centuries, fabricated Gospels bore Church certification of authenticity now confessed to be false, and this provides evidence that Christian writings are wholly fallacious."