By what logic? If the Holy Spirit lead the bishops and popes to determine which books should go in the Bible, which it had to for the New Testament to be correct, then when did the Spirit stop leading the Catholic Church?
Why would the Holy Spirit give the Church the authority to determine the books of the Bible only to revoke that authority, and where is it written that that happened? If you accept that the Catholic Church had the authority to pick those books, then doesn’t it make sense that the Catholic Church has the authority to interpret them as well?
I guess I don’t get how a person can accept the New Testament and not accept the Magisterium that gave it to us.