The Apostles rule in their successors, who maintained the same Apostolic understanding of Scripture.
“He who listens to you, listens to me “
“ My Sheep know my voice “
It’s in the Oral Apostolic Tradition that we hear the voice of Christ, not Luther or Calvin, the more I hear them, the less I hear Christ. These are not good people, I don’t hear Christ’s voice, they are revolting.
“Through none others know we the disposition of our salvation, than those through whom the gospel came to us, first heralding it, then by the will of God delivering to us the Scriptures, which were to be the foundation and pillar of our faith…But when, the heretics use Scriptures, as if they were wrong, and unauthoritative, and were variable, and the truth could not be extracted from them by those who were ignorant of Tradition…And when we challenge them in turn what that tradition, which is from the Apostles, which is guarded by the succession of elders in the churches, they oppose themselves to Tradition, saying that they are wiser, not only than those elders, but even than the Apostles. The Tradition of the Apostles, manifested ‘on the contrary’ in the whole world, is open in every Church to all who see the truth…And, since it is a long matter in a work like this to enumerate these successions, we will confute them by pointing to the Tradition of that greatest and most ancient and universally known Church, founded and constituted at Rome by the two most glorious Apostles, Peter and Paul, a tradition which she has had and a faith which she proclaims to all men from those Apostles.’ Irenaeus, Against Heresies 3,1-3 (inter A.D. 180/199).