What authority are you restoring if you too accept the authority of the Catholic Church for the Bible?
Here's a summary:
The Catholic Church discerned the Bible the Church of Jesus Christ of Latter-day Saints also accepts as authoritative.
The Trinity was taught from the beginning of the Apostolic era. See Athanasius, Pope Julius, Polycarp, Ignatius, Justin Martyr, etc., we have their writings from the first and early second centuries.
There is no early Church Father, taught by the Apostles themselves, that held to the theology of the Church of Jesus Christ of Latter-day Saints. I have most of their writings and have read much of them. Name an early Church Father who believed what you do. There must be some if it is the original, orthodox Christian message. Who believed it?
Your Church preaches a restoration of Christ's Church was necessary, meaning Christ's original Church was not sustainable and therefore Christ was not sufficient to sustain it Himself the first time.
There is no evidence for the Book of Mormon, it's history, language, or archeology anywhere in the world.
And there is no evidence the early Church was "Mormon". Please show us any evidence to the contrary.
Your only claim is to a testimony (Alma 10:4) at the end of the day. And when the rubber meets the road, it's a blind faith claim for something you have no other evidence for.
Would you accept those terms for any other religion? For Islam? JWs? Then why for Mormonism if it's really true? 2/