Jerome, on Matt 23:5

“And all their works they do for to be seen of men. For they make their phylacteries broad, and enlarge their fringes.”

“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.”

Imported from an open dataset — not yet checked against the printed edition.