How one knows if what the apostles taught they compared with the other testament of Christ the Old Testament.<quoted text>
Nope, I can't prove Christ is quoted accurately in the Bible. I can't prove the Books that make up the NT are authentic. I can't prove that the gnostic texts are authentic either.
I'm completely relying on the Authority of the Catholic Church to determine both.
You? You're also relying on the declaration of men.
King James Version (KJV)
11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.
This is how one knows which books were inspired and belong in the New Testament. Gods Word does not contridict itself.
However it does take discerment from the Holy Spirit and not the carnal mind to see deeper into Gods Word.