On the Catholic Priesthood
"Go Teach," Teach what?
“Go teach,” said Christ to His Apostles. Teach what? Not the opinions of Peter, James or John, not the sayings of Matthew, Philip or Bartholomew, not this or that system of belief, or these or those deductions of human reason; but “the things that I have commanded you.” And the command laid upon the twelve Apostles is still honored and obeyed by the priest in the Church of God. The priest, then, teaches, not in his own name, nor does he propose a doctrine thought out in deep study, but, “God exhorting through him” on account of his unity with the chair of Peter, he but echoes the divine voice, heard throughout Judea in the dawn of Christianity. The priest speaks and the world listens, not because of his words of deep reasoning, nor on account of his faultless diction, nor because of his fervent eloquence, but because he speaks as one having authority, the authority given by Jesus to His Apostles, and by them transmitted to him.
Source: The Priesthood by Rev. M.S. Smith (The Homelitic Monthly and Pastoral Review, Trinity Sunday, May 1922)
Special thanks to Robert Olson