Presumably, you are referring to the 4 main Gospels of: Mathew, Mark, Luke & John!
If you are referring to the manuscripts of the writings of the Apostles and some disciples, these eventually became known as the New Testament.
apocrypha
The old testament contains the Prophets of our Father The new testament contains the writings about Christ and the Apostles
The New Testament writers believed that God's word was inspired and authoritative. They saw their own writings as a means to convey God's message and teachings to others. They sought to faithfully communicate the message of Jesus Christ and the principles of the Christian faith through their writings.
No, the writings of Paul only exist in the New Testament.
Saint Jerome was a Christian scholar and theologian known for translating the Bible into Latin from its original Hebrew and Greek manuscripts. The New Testament is the second part of the Christian Bible, which includes the teachings and life of Jesus Christ, as well as the early Christian church's writings. Jerome's translation of the Bible, known as the Vulgate, became the standard Latin version used in the Catholic Church for centuries.
The Bible is divided into the Old and New Testament. The Old part deals with the creation and the Jews. The New part deals with Jesus (a Jew and the Christ), and the aftermath of Jesus rise to heaven, and Paul's writings.
The Holy Bible that contains both the Old Testament and New Testament. There are 66 books of inspired writings.
It is in the new testament of the bible; matthew, mark, Luke, John.
It didn't get "added" - the Bible is made up of the old Jewish books (what we call the Old Testament) and the books which concern Christ and the works and writings of his apostles. (what we call the New Testament). So there was no "Bible" before the New Testament.
The letters found in the New Testament are also known as the Epistles.
Because there is no god.