Jerome
Catena Aurea · Matthäusevangelium 23
But all their works they do for to be seen of men: they make broad their phylacteries, and enlarge the borders of their garments, And love the uppermost rooms at feasts, and the chief seats in the synagogues, And greetings in the markets, and to be called of men, Rabbi, Rabbi. But be not ye called Rabbi: for one is your Master, even Christ; and all ye are brethren. And call no man your father upon the earth: for one is your Father, which is in heaven. Neither be ye called masters: for one is your Master, even Christ. But he that is greatest among you shall be your servant. And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted.
It is a difficulty that the Apostle against this command calls himself the teacher of the Gentiles; and that in monasteries in their common conversation, they call one another, Father. It is to be cleared thus. It is one thing to be father or master by nature, another by sufferance. Thus when we call any man our father, we do it to shew respect to his age, not as regarding him as the author of our being. We also call men ‘Master,’ from resemblance to a real master; and, not to use tedious repetition, as the One God and One Son, who are by nature, do not preclude us from calling others gods and sons by adoption, so the One Father and One Master, do not preclude us from speaking of other fathers and masters by an abuse of the terms.