The Catholic Church came before the NT. The Catholic Church, whether you want to admit it or not, determined what would be put in the Bible and left out of the Bible.
It's just playing semantic word games to assert that. The "called -out ones", the "assembly of the firstborn who are enrolled in heaven" (Heb. 12:23) began with the very first believer in Christ whoever he or she was. The teachings of God through the prophets before Christ's incarnation, as well as His written down words and the revelation of the Holy Spirit to those who added to the books that make up the collection of sacred, GOD-breathed Scripture are what we today call "The Holy Bible". Today, the Roman Catholic church likes to take credit for determining what "got" into the Bible, but we know that those early believers accepted and received the writings as from God and they recognized its power and authority because they heard the voice of the Great Shepherd.
We had ALL the books that comprised what is called the Old Testament HUNDREDS of years before Jesus came here and He quoted them frequently, acknowledging their authority. He didn't need the Catholic church to tell Him what was and was not God's word. The first century believers received from the Apostles those letters and writings that were inspired by the Holy Spirit and were remanded to obey them and to mark those who refused to. The Holy Spirit finished the books that make up the New Testament prior to the start of the second century and no new books were added after the Apostle John's Revelation. There really was no disputing over what "belonged" in the single collection we call the Bible because the church had received from the Apostles what was the authority for the Christian faith.
What your comment, as well as those of others here, demonstrates very well the danger that comes from presuming the "church" is an authority over the word of God. Just like activist judges in our country, activist churches recognize only their own authority and subjugate the very word of God to their own whims and desires. Nothing good can come from it no matter what religion does it. Your own catechism states the church is a "servant" of the Bible, do you reject that?
It was and is GOD working through mankind from the time of Adam throughout The Old Testament and The Holy Spirit from Christ - present which created The Bible. The Holy Spirit has kept The Bible from Genesis through The Revelation intact and thus is The Word Of GOD. The church doesn't reveal GOD's Truth to man. The Holy Spirit does. John The Baptistr foretold it in Matthew Chapter 3.
The letters and accounts of witnesses to the life, death, and resurrection of Jesus Christ, have existed since the Disciples and Apostles began recording accounts after Christ ascended into heaven. The last one who witnessed the events was likely the Disciple John. As well The Apostle Paul wrote almost half of the New Testament and sent letters to persons and early churches.
Those writings just as the writings in The Old Testament survived intact not because of man but despite man. GOD's WORD To Mankind is His alone given to man. GOD most certainly can educated a person without them so much as ever reading a word of man written text. Just as He can make descendants of Abraham from rocks so could He also write The Bible and decide it's content.
The Bible is no mans works or no churches work to brag about having written it. It is not the churches place to even say what goes in it. What if the early Church had done a Thomas Jefferson edit?
This is why there must be The Holy Spirit teaching mankind one on one. Thus the work of The Holy Spirit who teaches all truth by revelation to man. The church which the gates of hell will not prevail. The Holy Spirit was sent first to The Disciples and Apostles and as well to the believers even today.
We can go into a room in our home by ourselves and confess our sins and pray to GOD. Our access to Him through Jesus Christ is just as valid and heard as any preacher, priest, or Pope. This order was put into place because man had corrupted The Temple and the Temple Priest were placing burdens on people to do that they themselves could not abide by.
Our one on one with GOD is accomplished not by mans rituals and church dogma but by intercession by The Holy Spirit. The choke hold the Priest and High Priest had on the church is broken. The new church was not built based on Peter's leadership. It was built on what GOD had revealed to Peter and what Peter stated to Christ.