Protestant Pastor & Preacher John MacArthur admits that there has to be a central teaching authority otherwise we end up with tens of thousands of different Christian denominations all claiming to be guided by the Holy Spirit teaching the— truth— differently.
Since Jesus can not be the author of confusion we know this can not be possible. And since MacArthur is known for his attacks on the Church Jesus Christ founded, the Universal (Catholic) Church, MacArthur presumably has made himself this authority.