” I could have wished to know for certain whether any hear with fitting earnestness the things that are said, whether we are not casting the seeds by the wayside: for in that case I should have made my instructions with more cheerfulness. For we shall speak, though no one hear, for the fear which is laid on us by our Saviour. For, saith He, testify to this people; even if they hear not, thou shalt thyself be guiltless. (See Ezekiel 3:19.) If however I had been persuaded of your earnestness, I should have spoken not for fear only, but should have done it with pleasure also. For now indeed, even if no man hear, even if my work, so long as I fulfill my own part, brings no danger, still the labor is not altogether pleasant. For what profit is it, when though I be not blamed, yet no one is benefited? But if any would give heed we shall receive advantage not so much from avoiding punishment ourselves as from your progress.
How then shall I know this? Having taken notice of some of you, who are not very attentive, I shall question them privately, when I meet them. And if I find that they retain any of the things that have been spoken (I say not all, for this would not be very easy for you), but even if [they retain] a few things out of many, it is plain I should have no further doubts about the rest. And indeed we ought, without giving notice beforehand, to have attacked you when off your guard. However it will suffice, if even in this way I should be able to attain my purpose. Nay rather, even as it is, I can attack you when you are off your guard. For that I shall question you, I have forewarned you; but when I shall question you I do not as yet make evident. For perhaps it may be to-day; perhaps to-morrow, perhaps after twenty or thirty days, perhaps after fewer, perhaps after more. Thus has God also made uncertain the day of our death. Nor hath He allowed it be clear to us, whether it shall befall us to-day, or to-morrow, or after a whole year, or after many years; that through the uncertainty of the expectation we may through all time keep ourselves firm in virtue. And that we shall indeed depart, He hath said,–but when, He hath not yet said. Thus too I have said that I shall question you, but I have not added when, wishing you always to be thoughtful.
And let no man say, I heard these things four or five weeks ago, or more, and I cannot retain them. For I wish the hearer so to retain them as to have his recollection perpetual and not apt to fade, nor yet that he should disown what is spoken. For I wish you to retain them, not, in order to tell them to me, but that ye may have profit; and this is of most serious interest to me. Let no one then say this.”