Sirach 22:6
Ben Sira, Ecclesiasticus4 A sensible daughter obtains a husband of her own, but one who acts shamefully is a grief to her father. 5 An impudent daughter disgraces father and husband, and is despised by both. 6 Like music in time of mourning is ill-timed conversation, but a thrashing and discipline are at all times wisdom. 9 Whoever teaches a fool is like one who glues potsherds together, or who rouses a sleeper from deep slumber. 10 Whoever tells a story to a fool tells it to a drowsy man; and at the end he will say, "What is it?"
Clement of Alexandria The Instructor 1.8
PaedagogusAs, therefore in addition to persuasive discourse, there is the hortatory and the consolatory form; so also, in addition to the laudatory, there is the inculpatory and reproachful. And this latter constitutes the art of censure. Now censure is a mark of good-will, not of ill-will. For both he who is a friend and he who is not, reproach; but the enemy does so in scorn, the friend in kindness. It is not, then, from hatred that the Lord chides men; for He Himself suffered for us, whom He might have destroyed for our faults. For the Instructor also, in virtue of His being good, with consummate art glides into censure by rebuke; rousing the sluggishness of the mind by His sharp words as by a scourge. Again in turn He endeavours to exhort the same persons. For those who are not induced by praise are spurred on by censure; and those whom censure calls not forth to salvation being as dead, are by denunciation roused to the truth. For the stripes and correction of wisdom are in all time. For teaching a fool is gluing a potsherd; and sharpening to sense a hopeless blockhead is bringing earth to sensation. Wherefore He adds plainly, rousing the sleeper from deep sleep, which of all things else is likest death.
Notes and References
"... Within early Christianity, the Letter of Barnabas echoes Sirach 5:12–14 about the danger of a double tongue, as well as the warning in Sirach 4:31 against an ungenerous attitude (Barnabas 19:7–9). Origen (d. 254 ce) quotes Ben Sira as scriptural when commenting on several Old Testament passages (Genesis 12:5; Joshua 15:6; Jeremiah 16:6). Clement of Alexandria (d. 215 CE) quotes about eighty Sirach verses, while John Chrysostom (d. 407 CE) includes about three hundred citations from the book. Augustine (d. 430 CE) not only cites Sirach about 300x, but also preached sermons on Sirach passages. Rabanus Maurus (d. 856 CE), abbot of Fulda in Germany, composed the earliest surviving Latin commentary on Sirach ..."
Corley, Jeremy "Sirach" in Oegema, Gerbern S. (ed.) The Oxford Handbook of the Apocrypha (pp. 284-305) Oxford University Press, 2021