I'm just making sure that somebody here is giving you the position of half the world's Christians, so you can at least consider it a starting point. Catholics believe that the bishops are all together the supreme teachers of the Church, and you don't have to believe what they teach to know that what they teach is the authorized teaching of the Church, as a non-Christian, you can at least know that position exists, since half of all Christians believe it, even more if you include the Orthodox also believe that, although, they are talking about a separate set of bishops. The bishops are the supreme teachers in the Church, not the theologians or scripture scholars, like in Protestantism.