Sirach 2:4
Ben Sira, Ecclesiasticus2 Set your heart right and be steadfast, and do not be impetuous in time of calamity. 3 Cling to him and do not depart, so that your last days may be prosperous. 4 Accept whatever befalls you, and in times of humiliation be patient. 5 For gold is tested in the fire, and those found acceptable, in the furnace of humiliation. 6 Trust in him, and he will help you; make your ways straight, and hope in him.
Cyprian Treatises 9:17
17 And moreover, also, for the varied ills of the flesh, and the frequent and severe torments of the body, wherewith the human race is daily wearied and harassed, patience is necessary. For since in that first transgression of the commandment strength of body departed with immortality, and weakness came on with death-and strength cannot be received unless when immortality also has been received — it behooves us, in this bodily frailty and weakness, always to struggle and to fight. And this struggle and encounter cannot be sustained but by the strength of patience. But as we are to be examined and searched out, diverse sufferings are introduced; and a manifold kind of temptations is inflicted by the losses of property, by the heats of fevers, by the torments of wounds, by the loss of those dear to us. Nor does anything distinguish between the unrighteous and the righteous more, than that in affliction the unrighteous man impatiently complains and blasphemes, while the righteous is proved by his patience, as it is written: In pain endure, and in your low estate have patience; for gold and silver are tried in the fire.
Notes and References
"... The eighty-fifth of the Apostolical Canons provides a list of the books in the Hebrew Canon and additionally includes the first three books of the Maccabees and the Wisdom of Sirach. However, these last four books are not included in the Canon, although the Wisdom of Sirach is specially recommended for the instruction of the young. In the Apostolical Constitutions, specifically in sections vi. 14 and 15 (also known as the Didascalia), quotations from Sirach are given with the same formula as those from the books of the Hebrew Canon. Yet, in section ii. 57 of the same work, there is no mention of any of the books of the Apocrypha. On the other hand, at the Council of Hippo in A.D. 393, Sirach was specially mentioned as one of the canonical books. This was further supported at the Council of Carthage in A.D. 397, where the "five books of Solomon," namely Proverbs, Ecclesiastes, Canticles, Wisdom, and Sirach, were reckoned among the canonical Scriptures. (Between the years A.D. 390 and 419 no less than six councils were held in Africa, and four of these at Carthage. For a time, under the inspiration of Aurelius and Augustine, the Church of Tertullian and Cyprian was filled with a new life before its fatal desolation ...) This decision was also confirmed by the Council of Carthage in A.D. 419. As we delve into what the Church Fathers have said regarding the canonicity of the book, our attention first turns to the Eastern Church ..."
Charles, R. H. The Apocrypha and Pseudepigrapha of the Old Testament (p. 299) Oxford University Press, 1913