To whom should we listen, the bishop, the preacher, the televangelist, Saint Paul or the prophets of old? Should we listen to the founders of Christian movements like Wesley, Calvin, Luther and Zwingli? All of those people may have been faithful servants of God, but none of them is the final authority. The question is answered in Mark 9:2-10. It does not mean that we should demean others. In other places Jesus told us to love our neighbors and that would include those who preach and teach the gospel. However, in the absolute sense, we ought to listen to Jesus first and others after that. That means that if any preacher of the gospel teaches something that Jesus did not, it is really secondary and not an essential of the faith. We obey God and listen to Jesus.