Library Pseudo-Clement Clementine Homilies
Homily 2, Chapter 4: A Request
However, I have learned, O Clement, how that in Alexandria Barnabas perfectly expounded to you the word respecting prophecy. Was it not so?
I answered, Yes, and exceeding well.
Then Peter: Therefore it is not necessary now to occupy with the instructions which you know, the time which may serve us for other instructions which you do not know.
Then said I: You have rightly said, O Peter. But vouchsafe this to me, who purpose always to attend upon you, continuously to expound to me, a delighted hearer, the doctrine of the Prophet. For, apart from Him, as I learned from Barnabas, it is impossible to learn the truth.
English translation in Ante-Nicene Fathers, Vol. VIII (eds. Alexander Roberts and James Donaldson; Buffalo: Christian Literature Publishing Co., 1886). Public domain. Digital text via New Advent Church Fathers.