Authority?

When Peter made his proclamation that Jesus was the Christ the Son of the living God he was told, by that same Jesus, that this was not revealed to him by flesh and blood but rather by His father in heaven. Certainly this is an authoritative word that Peter brings forth, yet all that he was doing was recognizing what was already there. Peter was not making anything happen and he certainly was not making Jesus the Christ. But we are told by Jesus that someone outside of Peter had revealed this to Peter, does this mean that he was inspired? Was the same Spirit who made Jesus the Christ the One at work in Peter to recognize that Jesus was the Son of God? We are told in the WCF that man is ultimately in need of the Spirit of God to illuminate him to see that the scriptures are the word of God. Is this the relationship the Church had with the Word of God in the canonization of Scriptures? Because of the work of the Spirit of God in the Church she has eyes to see the self-authenticating Word of God and therefore make an authoritative acknowledgment of that which already is. I was told today that the Church has authority around sacred things, in other words, to acknowledge the Word of God, proclaim, protect, and teach the word of God. But, she does not have authority in sacred things. The Church does not make the Word of God, rather she is created by the Word of God to be the people of the Word.