To whom/what do I look as a valid representative of the Magisterium?

The man in the mirror?
The head of the theology department at Notre Dame?
The Credo?
The Bible?
My parish priest?
My experience and education?
Only ordained clergy?
Encyclicals of Pius X?
My spouse?
The CDF?
Officers of the Church (names/titles)?
Designated males?
Theology of the Body?
Amoris Letitiae? 
Canon lawyers?
Our bishop?
The Pope?
EWTN?
The faculty of Franciscan University of Steubenville? 
The USCCB?
My parents?
All of the above?
Some of the above?