Wisdom of Solomon 9:13
11 For she knows and understands all things, and she will guide me wisely in my actions and guard me with her glory. 12 Then my works will be acceptable, and I shall judge your people justly, and shall be worthy of the throne of my father. 13 For who can learn the counsel of God? Or who can discern what the Lord wills? 14 For the reasoning of mortals is worthless, and our designs are likely to fail; 15 for a perishable body weighs down the soul, and this earthy tent burdens the thoughtful mind.
Augustine City of God 12.15
On the City of God Against the PagansFor my own part, indeed, as I dare not say that there ever was a time when the Lord God was not Lord, so I ought not to doubt that man had no existence before time, and was first created in time. But when I consider what God could be the Lord of, if there was not always some creature, I shrink from making any assertion, remembering my own insignificance, and that it is written, What man is he that can know the counsel of God? Or who can think what the will of the Lord is? For the thoughts of mortal men are timid, and our devices are but uncertain. For the corruptible body presses down the soul, and the earthly tabernacle weighs down the mind that muses upon many things. Many things certainly do I muse upon in this earthly tabernacle, because the one thing which is true among the many, or beyond the many, I cannot find.
Notes and References
"... In affirming the canonicity of the two ‘Solomonic’ books not written by Solomon, Augustine says of Wisdom and Sirach “the Church especially in the West has accepted them as authoritative from antiquity”; City of God 17.20). A survey of patristic comments on the liturgical use of what Rufinus called the ecclesiastical books bears out Augustine’s geographical distinction. Eastern sources restrict the liturgical use of documents to the books of the Jewish canon. Cyril of Jerusalem (Catechesis 4.36–38) emphatically asserts that only the 22 books accepted by the Jews find a place in Christian liturgy, and he advises catechumens to maintain this standard in their private reading. Athanasius (Festal Letters 39) assigns the ecclesiastical books the role of elementary instruction in the faith, as do the Apostolic Canons (canon 85); this position seems to discount their use in the liturgy. The Council of Laodicea is more explicit; in the same context in which it limits the OT canon to 22 books ... However, the matter stood differently among Latin writers: Jerome, Rufinus, and Augustine all affirm that the ecclesiastical books are used in the corporate worship of the Church ... if the Church reads a ‘scriptural’ book, it is a canonical book. Similarly, Augustine responds to the objection of some that the Book of Wisdom is not canonical by arguing that its employment in the liturgy implies its divine authority ..."
Gallagher, Edmon L. Hebrew Scripture in Patristic Biblical Theory: Canon, Language, Text (pp. 54-55) Brill, 2012