The Christian church, as an earthly organization, recognized the Word of God .....(John 10:27). It didn’t give us the Word of God.
Also, it was the Jews who gave us the Old Testament. The authenticity of the New Testament documents rests in the inspiration of God through the apostles—not the Catholic Church.
Furthermore, the Roman Catholic Church did not give us the Old Testament... The Jews did.... How can the RCC claim it gave us the Bible when it did not give us the Old Testament?
Finally, when the Catholic Church claims that it is the source of the sacred Scriptures, it is, in effect, placing itself above the Word of God by claiming that through its authority we received the Word of God.
https://carm.org/did-roman-catholic-church-give-us-our-bible
The New Testament as it exists today was in circulation and recognized as inspired long before the Council of Nicæa. All of the books that comprise the New Testament were written by AD 95. Even during Paul’s lifetime, his letters were already in circulation among the early believers. Paul instructed the members in Colossæ: “Now when this epistle is read among you, see that it is read also in the church of the Laodiceans, and that you likewise read the epistle from Laodicea.” (Colossians 4:16, NKJV. See also, 1 Thessalonians 5:27.)
Interesting theory.