...is that the earliest Christians selected only those writings consistent with the teachings of Jesus and the apostles.
During the first century
there were over 150 letters, gospels, and other writings claiming to be
“true”. It took until the end of the fourth century for the Church to
finally determine with confidence that only 27 of those writings (today's New Testament) were to be fully trusted.
The determination of which writings to trust was based mainly on the
writing's confirmation to tradition taught by the apostles. Why don't
we see any Bible references to the Eucharist or baptism only being a
symbol? That's not what Christ and the apostles taught so those
writings were thrown out. Why don't we see any letters saying Jesus
wasn't divine or that he was only divine (those writings existed)? They
were thrown out because that's not what Christ and the apostles taught.
That the books of the Bible were selected because they conform to the
authentic teaching of the apostles and of Jesus Christ is yet another
reason Catholics believe the Bible is the Word of God.