Sirach 14:17
Ben Sira, Ecclesiasticus15 Will you not leave the fruit of your labors to another, and what you acquired by toil to be divided by lot? 16 Give, and take, and indulge yourself, because in Hades one cannot look for luxury. 17 All living beings become old like a garment, for the decree from of old is, "You must die!" 18 Like abundant leaves on a spreading tree that sheds some and puts forth others, so are the generations of flesh and blood: one dies and another is born. 19 Every work decays and ceases to exist, and the one who made it will pass away with it.
Augustine City of God 16.27
On the City of God Against the PagansNow there are many things called God's covenants besides those two great ones, the old and the new, which any one who pleases may read and know. For the first covenant, which was made with the first man, is just this: In the day you eat thereof, you shall surely die. Whence it is written in the book called Ecclesiasticus, All flesh waxes old as does a garment. For the covenant from the beginning is, You shall die the death. Now, as the law was more plainly given afterward, and the apostle says, Where no law is, there is no prevarication...
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